The Anti-Christ movement

Because it is limited by prior dogma.

Finally, something on which we agree.

Only I didn't have prior dogma since I didn't go to church as a child nor were my parents Christians. ;)So my knowledge came from reading the bible and observing reality to see that the Genesis account of creation agrees with reality perfectly.

This is dogma, a very limited view of it.

I suppose you didn't pay much attention during school either. Otherwise you would know that light is energy, sound can't travel through empty space, and mutations are errors in gene replication.

Dogma is blindly believing everything scientists say even though it contradicts reality. Sorry.

When scientists say something they back it up with evidence.

Because of science we have modern medicine, because of science we have clean food and water, because of science we have electricity, because of science you are able to argue your opinions over the internet.

But when they discover something that disagrees with your ancient dogma, it's them that are wrong.....yeah, right :p

The only problem is that their "evidence" is nothing more than speculation based on observations. Examples are drugs that are constantly recalled since they actually can increase death. Or having to constantly change claims like that fats are bad for you, carbs are good into fats are good for you, carbs are bad for you. Or claiming that in the 1970's we were headed into another age and now claiming that the planet is warming up, etc. :rollinglaugh:

So when scientists speculate incorrectly (which is more often than not), then they have to say; "We now know that what we once thought was true is not true."

And that's why today's science will be archaic to tomorrow's science. Scientists have to keep replacing their old lies with new ones. And as long as they reject God, they'll continue to do that until they all die.

And yet evolution has stood for 150+ years and is considered the backbone of modern biology.

The only thing that has happened since then is we've found more mechanism for evolution to occur.

YECs cannot even say anymore that no new species has evolved in front of our eyes, this is no longer true.







OBSERVED INSTANCES OF SPECIATION:

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5.1.1 Plants

(See also the discussion in de Wet 1971).
5.1.1.1 Evening Primrose (Oenothera gigas)

While studying the genetics of the evening primrose, Oenothera lamarckiana, de Vries (1905) found an unusual variant among his plants. O. lamarckiana has a chromosome number of 2N = 14. The variant had a chromosome number of 2N = 28. He found that he was unable to breed this variant with O. lamarckiana. He named this new species O. gigas.
5.1.1.2 Kew Primrose (Primula kewensis)

Digby (1912) crossed the primrose species Primula verticillata and P. floribunda to produce a sterile hybrid. Polyploidization occurred in a few of these plants to produce fertile offspring. The new species was named P. kewensis. Newton and Pellew (1929) note that spontaneous hybrids of P. verticillata and P. floribunda set tetraploid seed on at least three occasions. These happened in 1905, 1923 and 1926.
5.1.1.3 Tragopogon

Owenby (1950) demonstrated that two species in this genus were produced by polyploidization from hybrids. He showed that Tragopogon miscellus found in a colony in Moscow, Idaho was produced by hybridization of T. dubius and T. pratensis. He also showed that T. mirus found in a colony near Pullman, Washington was produced by hybridization of T. dubius and T. porrifolius. Evidence from chloroplast DNA suggests that T. mirus has originated independently by hybridization in eastern Washington and western Idaho at least three times (Soltis and Soltis 1989). The same study also shows multiple origins for T. micellus.
5.1.1.4 Raphanobrassica

The Russian cytologist Karpchenko (1927, 1928) crossed the radish, Raphanus sativus, with the cabbage, Brassica oleracea. Despite the fact that the plants were in different genera, he got a sterile hybrid. Some unreduced gametes were formed in the hybrids. This allowed for the production of seed. Plants grown from the seeds were interfertile with each other. They were not interfertile with either parental species. Unfortunately the new plant (genus Raphanobrassica) had the foliage of a radish and the root of a cabbage.
5.1.1.5 Hemp Nettle (Galeopsis tetrahit)

A species of hemp nettle, Galeopsis tetrahit, was hypothesized to be the result of a natural hybridization of two other species, G. pubescens and G. speciosa (Muntzing 1932). The two species were crossed. The hybrids matched G. tetrahit in both visible features and chromosome morphology.
5.1.1.6 Madia citrigracilis

Along similar lines, Clausen et al. (1945) hypothesized that Madia citrigracilis was a hexaploid hybrid of M. gracilis and M. citriodora As evidence they noted that the species have gametic chromosome numbers of n = 24, 16 and 8 respectively. Crossing M. gracilis and M. citriodora resulted in a highly sterile triploid with n = 24. The chromosomes formed almost no bivalents during meiosis. Artificially doubling the chromosome number using colchecine produced a hexaploid hybrid which closely resembled M. citrigracilis and was fertile.
5.1.1.7 Brassica

Frandsen (1943, 1947) was able to do this same sort of recreation of species in the genus Brassica (cabbage, etc.). His experiments showed that B. carinata (n = 17) may be recreated by hybridizing B. nigra (n = 8) and B. oleracea, B. juncea (n = 18) may be recreated by hybridizing B. nigra and B. campestris (n = 10), and B. napus (n = 19) may be recreated by hybridizing B. oleracea and B. campestris.
5.1.1.8 Maidenhair Fern (Adiantum pedatum)

Rabe and Haufler (1992) found a naturally occurring diploid sporophyte of maidenhair fern which produced unreduced (2N) spores. These spores resulted from a failure of the paired chromosomes to dissociate during the first division of meiosis. The spores germinated normally and grew into diploid gametophytes. These did not appear to produce antheridia. Nonetheless, a subsequent generation of tetraploid sporophytes was produced. When grown in the lab, the tetraploid sporophytes appear to be less vigorous than the normal diploid sporophytes. The 4N individuals were found near Baldwin City, Kansas.
5.1.1.9 Woodsia Fern (Woodsia abbeae)

Woodsia abbeae was described as a hybrid of W. cathcariana and W. ilvensis (Butters 1941). Plants of this hybrid normally produce abortive sporangia containing inviable spores. In 1944 Butters found a W. abbeae plant near Grand Portage, Minn. that had one fertile frond (Butters and Tryon 1948). The apical portion of this frond had fertile sporangia. Spores from this frond germinated and grew into prothallia. About six months after germination sporophytes were produced. They survived for about one year. Based on cytological evidence, Butters and Tryon concluded that the frond that produced the viable spores had gone tetraploid. They made no statement as to whether the sporophytes grown produced viable spores.
5.1.2 Animals

Speciation through hybridization and/or polyploidy has long been considered much less important in animals than in plants [[[refs.]]]. A number of reviews suggest that this view may be mistaken. (Lokki and Saura 1980; Bullini and Nascetti 1990; Vrijenhoek 1994). Bullini and Nasceti (1990) review chromosomal and genetic evidence that suggest that speciation through hybridization may occur in a number of insect species, including walking sticks, grasshoppers, blackflies and cucurlionid beetles. Lokki and Saura (1980) discuss the role of polyploidy in insect evolution. Vrijenhoek (1994) reviews the literature on parthenogenesis and hybridogenesis in fish. I will tackle this topic in greater depth in the next version of this document.
5.2 Speciations in Plant Species not Involving Hybridization or Polyploidy

5.2.1 Stephanomeira malheurensis

Gottlieb (1973) documented the speciation of Stephanomeira malheurensis. He found a single small population (< 250 plants) among a much larger population (> 25,000 plants) of S. exigua in Harney Co., Oregon. Both species are diploid and have the same number of chromosomes (N = 8). S. exigua is an obligate outcrosser exhibiting sporophytic self-incompatibility. S. malheurensis exhibits no self-incompatibility and self-pollinates. Though the two species look very similar, Gottlieb was able to document morphological differences in five characters plus chromosomal differences. F1 hybrids between the species produces only 50% of the seeds and 24% of the pollen that conspecific crosses produced. F2 hybrids showed various developmental abnormalities.
5.2.2 Maize (Zea mays)

Pasterniani (1969) produced almost complete reproductive isolation between two varieties of maize. The varieties were distinguishable by seed color, white versus yellow. Other genetic markers allowed him to identify hybrids. The two varieties were planted in a common field. Any plant's nearest neighbors were always plants of the other strain. Selection was applied against hybridization by using only those ears of corn that showed a low degree of hybridization as the source of the next years seed. Only parental type kernels from these ears were planted. The strength of selection was increased each year. In the first year, only ears with less than 30% intercrossed seed were used. In the fifth year, only ears with less than 1% intercrossed seed were used. After five years the average percentage of intercrossed matings dropped from 35.8% to 4.9% in the white strain and from 46.7% to 3.4% in the yellow strain.
5.2.3 Speciation as a Result of Selection for Tolerance to a Toxin: Yellow Monkey Flower (Mimulus guttatus)

At reasonably low concentrations, copper is toxic to many plant species. Several plants have been seen to develop a tolerance to this metal (Macnair 1981). Macnair and Christie (1983) used this to examine the genetic basis of a postmating isolating mechanism in yellow monkey flower. When they crossed plants from the copper tolerant "Copperopolis" population with plants from the nontolerant "Cerig" population, they found that many of the hybrids were inviable. During early growth, just after the four leaf stage, the leaves of many of the hybrids turned yellow and became necrotic. Death followed this. This was seen only in hybrids between the two populations. Through mapping studies, the authors were able to show that the copper tolerance gene and the gene responsible for hybrid inviability were either the same gene or were very tightly linked. These results suggest that reproductive isolation may require changes in only a small number of genes.
5.3 The Fruit Fly Literature

5.3.1 Drosophila paulistorum

Dobzhansky and Pavlovsky (1971) reported a speciation event that occurred in a laboratory culture of Drosophila paulistorum sometime between 1958 and 1963. The culture was descended from a single inseminated female that was captured in the Llanos of Colombia. In 1958 this strain produced fertile hybrids when crossed with conspecifics of different strains from Orinocan. From 1963 onward crosses with Orinocan strains produced only sterile males. Initially no assortative mating or behavioral isolation was seen between the Llanos strain and the Orinocan strains. Later on Dobzhansky produced assortative mating (Dobzhansky 1972).
5.3.2 Disruptive Selection on Drosophila melanogaster

Thoday and Gibson (1962) established a population of Drosophila melanogaster from four gravid females. They applied selection on this population for flies with the highest and lowest numbers of sternoplural chaetae (hairs). In each generation, eight flies with high numbers of chaetae were allowed to interbreed and eight flies with low numbers of chaetae were allowed to interbreed. Periodically they performed mate choice experiments on the two lines. They found that they had produced a high degree of positive assortative mating between the two groups. In the decade or so following this, eighteen labs attempted unsuccessfully to reproduce these results. References are given in Thoday and Gibson 1970.
5.3.3 Selection on Courtship Behavior in Drosophila melanogaster

Crossley (1974) was able to produce changes in mating behavior in two mutant strains of D. melanogaster. Four treatments were used. In each treatment, 55 virgin males and 55 virgin females of both ebony body mutant flies and vestigial wing mutant flies (220 flies total) were put into a jar and allowed to mate for 20 hours. The females were collected and each was put into a separate vial. The phenotypes of the offspring were recorded. Wild type offspring were hybrids between the mutants. In two of the four treatments, mating was carried out in the light. In one of these treatments all hybrid offspring were destroyed. This was repeated for 40 generations. Mating was carried out in the dark in the other two treatments. Again, in one of these all hybrids were destroyed. This was repeated for 49 generations. Crossley ran mate choice tests and observed mating behavior. Positive assortative mating was found in the treatment which had mated in the light and had been subject to strong selection against hybridization. The basis of this was changes in the courtship behaviors of both sexes. Similar experiments, without observation of mating behavior, were performed by Knight, et al. (1956).
5.3.4 Sexual Isolation as a Byproduct of Adaptation to Environmental Conditions in Drosophila melanogaster

Kilias, et al. (1980) exposed D. melanogaster populations to different temperature and humidity regimes for several years. They performed mating tests to check for reproductive isolation. They found some sterility in crosses among populations raised under different conditions. They also showed some positive assortative mating. These things were not observed in populations which were separated but raised under the same conditions. They concluded that sexual isolation was produced as a byproduct of selection.
5.3.5 Sympatric Speciation in Drosophila melanogaster

In a series of papers (Rice 1985, Rice and Salt 1988 and Rice and Salt 1990) Rice and Salt presented experimental evidence for the possibility of sympatric speciation. They started from the premise that whenever organisms sort themselves into the environment first and then mate locally, individuals with the same habitat preferences will necessarily mate assortatively. They established a stock population of D. melanogaster with flies collected in an orchard near Davis, California. Pupae from the culture were placed into a habitat maze. Newly emerged flies had to negotiate the maze to find food. The maze simulated several environmental gradients simultaneously. The flies had to make three choices of which way to go. The first was between light and dark (phototaxis). The second was between up and down (geotaxis). The last was between the scent of acetaldehyde and the scent of ethanol (chemotaxis). This divided the flies among eight habitats. The flies were further divided by the time of day of emergence. In total the flies were divided among 24 spatio-temporal habitats.

They next cultured two strains of flies that had chosen opposite habitats. One strain emerged early, flew upward and was attracted to dark and acetaldehyde. The other emerged late, flew downward and was attracted to light and ethanol. Pupae from these two strains were placed together in the maze. They were allowed to mate at the food site and were collected. Eye color differences between the strains allowed Rice and Salt to distinguish between the two strains. A selective penalty was imposed on flies that switched habitats. Females that switched habitats were destroyed. None of their gametes passed into the next generation. Males that switched habitats received no penalty. After 25 generations of this mating tests showed reproductive isolation between the two strains. Habitat specialization was also produced.

They next repeated the experiment without the penalty against habitat switching. The result was the same -- reproductive isolation was produced. They argued that a switching penalty is not necessary to produce reproductive isolation. Their results, they stated, show the possibility of sympatric speciation.
5.3.6 Isolation Produced as an Incidental Effect of Selection on several Drosophila species

In a series of experiments, del Solar (1966) derived positively and negatively geotactic and phototactic strains of D. pseudoobscura from the same population by running the flies through mazes. Flies from different strains were then introduced into mating chambers (10 males and 10 females from each strain). Matings were recorded. Statistically significant positive assortative mating was found.

In a separate series of experiments Dodd (1989) raised eight populations derived from a single population of D. Pseudoobscura on stressful media. Four populations were raised on a starch based medium, the other four were raised on a maltose based medium. The fly populations in both treatments took several months to get established, implying that they were under strong selection. Dodd found some evidence of genetic divergence between flies in the two treatments. He performed mate choice tests among experimental populations. He found statistically significant assortative mating between populations raised on different media, but no assortative mating among populations raised within the same medium regime. He argued that since there was no direct selection for reproductive isolation, the behavioral isolation results from a pleiotropic by-product to adaptation to the two media. Schluter and Nagel (1995) have argued that these results provide experimental support for the hypothesis of parallel speciation.

Less dramatic results were obtained by growing D. willistoni on media of different pH levels (de Oliveira and Cordeiro 1980). Mate choice tests after 26, 32, 52 and 69 generations of growth showed statistically significant assortative mating between some populations grown in different pH treatments. This ethological isolation did not always persist over time. They also found that some crosses made after 106 and 122 generations showed significant hybrid inferiority, but only when grown in acid medium.
5.3.7 Selection for Reinforcement in Drosophila melanogaster

Some proposed models of speciation rely on a process called reinforcement to complete the speciation process. Reinforcement occurs when to partially isolated allopatric populations come into contact. Lower relative fitness of hybrids between the two populations results in increased selection for isolating mechanisms. I should note that a recent review (Rice and Hostert 1993) argues that there is little experimental evidence to support reinforcement models. Two experiments in which the authors argue that their results provide support are discussed below.

Ehrman (1971) established strains of wild-type and mutant (black body) D. melanogaster. These flies were derived from compound autosome strains such that heterotypic matings would produce no progeny. The two strains were reared together in common fly cages. After two years, the isolation index generated from mate choice experiments had increased from 0.04 to 0.43, indicating the appearance of considerable assortative mating. After four years this index had risen to 0.64 (Ehrman 1973).

Along the same lines, Koopman (1950) was able to increase the degree of reproductive isolation between two partially isolated species, D. pseudoobscura and D. persimilis.
5.3.8 Tests of the Founder-flush Speciation Hypothesis Using Drosophila

The founder-flush (a.k.a. flush-crash) hypothesis posits that genetic drift and founder effects play a major role in speciation (Powell 1978). During a founder-flush cycle a new habitat is colonized by a small number of individuals (e.g. one inseminated female). The population rapidly expands (the flush phase). This is followed by the population crashing. During this crash period the population experiences strong genetic drift. The population undergoes another rapid expansion followed by another crash. This cycle repeats several times. Reproductive isolation is produced as a byproduct of genetic drift.

Dodd and Powell (1985) tested this hypothesis using D. pseudoobscura. A large, heterogeneous population was allowed to grow rapidly in a very large population cage. Twelve experimental populations were derived from this population from single pair matings. These populations were allowed to flush. Fourteen months later, mating tests were performed among the twelve populations. No postmating isolation was seen. One cross showed strong behavioral isolation. The populations underwent three more flush-crash cycles. Forty-four months after the start of the experiment (and fifteen months after the last flush) the populations were again tested. Once again, no postmating isolation was seen. Three populations showed behavioral isolation in the form of positive assortative mating. Later tests between 1980 and 1984 showed that the isolation persisted, though it was weaker in some cases.

Galina, et al. (1993) performed similar experiments with D. pseudoobscura. Mating tests between populations that underwent flush-crash cycles and their ancestral populations showed 8 cases of positive assortative mating out of 118 crosses. They also showed 5 cases of negative assortative mating (i.e. the flies preferred to mate with flies of the other strain). Tests among the founder-flush populations showed 36 cases of positive assortative mating out of 370 crosses. These tests also found 4 cases of negative assortative mating. Most of these mating preferences did not persist over time. Galina, et al. concluded that the founder-flush protocol yields reproductive isolation only as a rare and erratic event.

Ahearn (1980) applied the founder-flush protocol to D. silvestris. Flies from a line of this species underwent several flush-crash cycles. They were tested in mate choice experiments against flies from a continuously large population. Female flies from both strains preferred to mate with males from the large population. Females from the large population would not mate with males from the founder flush population. An asymmetric reproductive isolation was produced.

In a three year experiment, Ringo, et al. (1985) compared the effects of a founder-flush protocol to the effects of selection on various traits. A large population of D. simulans was created from flies from 69 wild caught stocks from several locations. Founder-flush lines and selection lines were derived from this population. The founder-flush lines went through six flush-crash cycles. The selection lines experienced equal intensities of selection for various traits. Mating test were performed between strains within a treatment and between treatment strains and the source population. Crosses were also checked for postmating isolation. In the selection lines, 10 out of 216 crosses showed positive assortative mating (2 crosses showed negative assortative mating). They also found that 25 out of 216 crosses showed postmating isolation. Of these, 9 cases involved crosses with the source population. In the founder-flush lines 12 out of 216 crosses showed positive assortative mating (3 crosses showed negative assortative mating). Postmating isolation was found in 15 out of 216 crosses, 11 involving the source population. They concluded that only weak isolation was found and that there was little difference between the effects of natural selection and the effects of genetic drift.

A final test of the founder-flush hypothesis will be described with the housefly cases below.
5.4 Housefly Speciation Experiments

5.4.1 A Test of the Founder-flush Hypothesis Using Houseflies

Meffert and Bryant (1991) used houseflies to test whether bottlenecks in populations can cause permanent alterations in courtship behavior that lead to premating isolation. They collected over 100 flies of each sex from a landfill near Alvin, Texas. These were used to initiate an ancestral population. From this ancestral population they established six lines. Two of these lines were started with one pair of flies, two lines were started with four pairs of flies and two lines were started with sixteen pairs of flies. These populations were flushed to about 2,000 flies each. They then went through five bottlenecks followed by flushes. This took 35 generations. Mate choice tests were performed. One case of positive assortative mating was found. One case of negative assortative mating was also found.
5.4.2 Selection for Geotaxis with and without Gene Flow

Soans, et al. (1974) used houseflies to test Pimentel's model of speciation. This model posits that speciation requires two steps. The first is the formation of races in subpopulations. This is followed by the establishment of reproductive isolation. Houseflies were subjected to intense divergent selection on the basis of positive and negative geotaxis. In some treatments no gene flow was allowed, while in others there was 30% gene flow. Selection was imposed by placing 1000 flies into the center of a 108 cm vertical tube. The first 50 flies that reached the top and the first 50 flies that reached the bottom were used to found positively and negatively geotactic populations. Four populations were established:
Population A + geotaxis, no gene flow
Population B - geotaxis, no gene flow
Population C + geotaxis, 30% gene flow
Population D - geotaxis, 30% gene flow

Selection was repeated within these populations each generations. After 38 generations the time to collect 50 flies had dropped from 6 hours to 2 hours in Pop A, from 4 hours to 4 minutes in Pop B, from 6 hours to 2 hours in Pop C and from 4 hours to 45 minutes in Pop D. Mate choice tests were performed. Positive assortative mating was found in all crosses. They concluded that reproductive isolation occurred under both allopatric and sympatric conditions when very strong selection was present.

Hurd and Eisenberg (1975) performed a similar experiment on houseflies using 50% gene flow and got the same results.
5.5 Speciation Through Host Race Differentiation

Recently there has been a lot of interest in whether the differentiation of an herbivorous or parasitic species into races living on different hosts can lead to sympatric speciation. It has been argued that in animals that mate on (or in) their preferred hosts, positive assortative mating is an inevitable byproduct of habitat selection (Rice 1985; Barton, et al. 1988). This would suggest that differentiated host races may represent incipient species.
5.5.1 Apple Maggot Fly (Rhagoletis pomonella)

Rhagoletis pomonella is a fly that is native to North America. Its normal host is the hawthorn tree. Sometime during the nineteenth century it began to infest apple trees. Since then it has begun to infest cherries, roses, pears and possibly other members of the rosaceae. Quite a bit of work has been done on the differences between flies infesting hawthorn and flies infesting apple. There appear to be differences in host preferences among populations. Offspring of females collected from on of these two hosts are more likely to select that host for oviposition (Prokopy et al. 1988). Genetic differences between flies on these two hosts have been found at 6 out of 13 allozyme loci (Feder et al. 1988, see also McPheron et al. 1988). Laboratory studies have shown an asynchrony in emergence time of adults between these two host races (Smith 1988). Flies from apple trees take about 40 days to mature, whereas flies from hawthorn trees take 54-60 days to mature. This makes sense when we consider that hawthorn fruit tends to mature later in the season that apples. Hybridization studies show that host preferences are inherited, but give no evidence of barriers to mating. This is a very exciting case. It may represent the early stages of a sympatric speciation event (considering the dispersal of R. pomonella to other plants it may even represent the beginning of an adaptive radiation). It is important to note that some of the leading researchers on this question are urging caution in interpreting it. Feder and Bush (1989) stated:

"Hawthorn and apple "host races" of R. pomonella may therefore represent incipient species. However, it remains to be seen whether host-associated traits can evolve into effective enough barriers to gene flow to result eventually in the complete reproductive isolation of R. pomonella populations."

5.5.2 Gall Former Fly (Eurosta solidaginis)

Eurosta solidaginis is a gall forming fly that is associated with goldenrod plants. It has two hosts: over most of its range it lays its eggs in Solidago altissima, but in some areas it uses S. gigantea as its host. Recent electrophoretic work has shown that the genetic distances among flies from different sympatric hosts species are greater than the distances among flies on the same host in different geographic areas (Waring et al. 1990). This same study also found reduced variability in flies on S. gigantea. This suggests that some E. solidaginis have recently shifted hosts to this species. A recent study has compared reproductive behavior of the flies associated with the two hosts (Craig et al. 1993). They found that flies associated with S. gigantea emerge earlier in the season than flies associated with S. altissima. In host choice experiments, each fly strain ovipunctured its own host much more frequently than the other host. Craig et al. (1993) also performed several mating experiments. When no host was present and females mated with males from either strain, if males from only one strain were present. When males of both strains were present, statistically significant positive assortative mating was seen. In the presence of a host, assortative mating was also seen. When both hosts and flies from both populations were present, females waited on the buds of the host that they are normally associated with. The males fly to the host to mate. Like the Rhagoletis case above, this may represent the beginning of a sympatric speciation.
5.6 Flour Beetles (Tribolium castaneum)

Halliburton and Gall (1981) established a population of flour beetles collected in Davis, California. In each generation they selected the 8 lightest and the 8 heaviest pupae of each sex. When these 32 beetles had emerged, they were placed together and allowed to mate for 24 hours. Eggs were collected for 48 hours. The pupae that developed from these eggs were weighed at 19 days. This was repeated for 15 generations. The results of mate choice tests between heavy and light beetles was compared to tests among control lines derived from randomly chosen pupae. Positive assortative mating on the basis of size was found in 2 out of 4 experimental lines.
5.7 Speciation in a Lab Rat Worm, Nereis acuminata

In 1964 five or six individuals of the polychaete worm, Nereis acuminata, were collected in Long Beach Harbor, California. These were allowed to grow into a population of thousands of individuals. Four pairs from this population were transferred to the Woods Hole Oceanographic Institute. For over 20 years these worms were used as test organisms in environmental toxicology. From 1986 to 1991 the Long Beach area was searched for populations of the worm. Two populations, P1 and P2, were found. Weinberg, et al. (1992) performed tests on these two populations and the Woods Hole population (WH) for both postmating and premating isolation. To test for postmating isolation, they looked at whether broods from crosses were successfully reared. The results below give the percentage of successful rearings for each group of crosses.
WH ? WH - 75%
P1 ? P1 - 95%
P2 ? P2 - 80%
P1 ? P2 - 77%
WH ? P1 - 0%
WH ? P2 - 0%

They also found statistically significant premating isolation between the WH population and the field populations. Finally, the Woods Hole population showed slightly different karyotypes from the field populations.
5.8 Speciation Through Cytoplasmic Incompatability Resulting from the Presence of a Parasite or Symbiont

In some species the presence of intracellular bacterial parasites (or symbionts) is associated with postmating isolation. This results from a cytoplasmic incompatability between gametes from strains that have the parasite (or symbiont) and stains that don't. An example of this is seen in the mosquito Culex pipiens (Yen and Barr 1971). Compared to within strain matings, matings between strains from different geographic regions may may have any of three results: These matings may produce a normal number of offspring, they may produce a reduced number of offspring or they may produce no offspring. Reciprocal crosses may give the same or different results. In an incompatible cross, the egg and sperm nuclei fail to unite during fertilization. The egg dies during embryogenesis. In some of these strains, Yen and Barr (1971) found substantial numbers of Rickettsia-like microbes in adults, eggs and embryos. Compatibility of mosquito strains seems to be correlated with the strain of the microbe present. Mosquitoes that carry different strains of the microbe exhibit cytoplasmic incompatibility; those that carry the same strain of microbe are interfertile.

Similar phenomena have been seen in a number of other insects. Microoganisms are seen in the eggs of both Nasonia vitripennis and N. giraulti. These two species do not normally hybridize. Following treatment with antibiotics, hybrids occur between them (Breeuwer and Werren 1990). In this case, the symbiont is associated with improper condensation of host chromosomes.

For more examples and a critical review of this topic, see Thompson 1987.
5.9 A Couple of Ambiguous Cases

So far the BSC has applied to all of the experiments discussed. The following are a couple of major morphological changes produced in asexual species. Do these represent speciation events? The answer depends on how species is defined.
5.9.1 Coloniality in Chlorella vulgaris

Boraas (1983) reported the induction of multicellularity in a strain of Chlorella pyrenoidosa (since reclassified as C. vulgaris) by predation. He was growing the unicellular green alga in the first stage of a two stage continuous culture system as for food for a flagellate predator, Ochromonas sp., that was growing in the second stage. Due to the failure of a pump, flagellates washed back into the first stage. Within five days a colonial form of the Chlorella appeared. It rapidly came to dominate the culture. The colony size ranged from 4 cells to 32 cells. Eventually it stabilized at 8 cells. This colonial form has persisted in culture for about a decade. The new form has been keyed out using a number of algal taxonomic keys. They key out now as being in the genus Coelosphaerium, which is in a different family from Chlorella.
5.9.2 Morphological Changes in Bacteria

Shikano, et al. (1990) reported that an unidentified bacterium underwent a major morphological change when grown in the presence of a ciliate predator. This bacterium's normal morphology is a short (1.5 um) rod. After 8 - 10 weeks of growing with the predator it assumed the form of long (20 um) cells. These cells have no cross walls. Filaments of this type have also been produced under circumstances similar to Boraas' induction of multicellularity in Chlorella. Microscopic examination of these filaments is described in Gillott et al. (1993). Multicellularity has also been produced in unicellular bacterial by predation (Nakajima and Kurihara 1994). In this study, growth in the presence of protozoal grazers resulted in the production of chains of bacterial cells.
6.0 References

Ahearn, J. N. 1980. Evolution of behavioral reproductive isolation in a laboratory stock of Drosophila silvestris. Experientia. 36:63-64.

Barton, N. H., J. S. Jones and J. Mallet. 1988. No barriers to speciation. Nature. 336:13-14.

Baum, D. 1992. Phylogenetic species concepts. Trends in Ecology and Evolution. 7:1-3.

Boraas, M. E. 1983. Predator induced evolution in chemostat culture. EOS. Transactions of the American Geophysical Union. 64:1102.

Breeuwer, J. A. J. and J. H. Werren. 1990. Microorganisms associated with chromosome destruction and reproductive isolation between two insect species. Nature. 346:558-560.

Budd, A. F. and B. D. Mishler. 1990. Species and evolution in clonal organisms -- a summary and discussion. Systematic Botany 15:166-171.

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:thumbup:

Now that's pretty comprehensive.

Even Darwin considered his theory, just that, a theory. He never claimed that man evolved from monkeys either. He wasn't stupid and was able to concoct a pretty good theory. Unfortunately a large portion of people who disagree with those who believe in Creationism and not bothered to read Darwins theory have decided that evolving from monkeys is the only logical answer since their minds cannot comprehend a possibility of a divine being. They never consider that this planet we call earth was most probably void of anything at one time. Which is totally logical. And if this is the case, where did the first cell come from? Where did the second cell come from and how did they join together to create a 'life form'? Going beyond that, how many trillions of years did it take for there to be more than one cell, (created from nothingness)? If anything boggles the mind, that should. Creationism is more logical, in my belief.

Back on topic:




Carico, it would be very nice if you quit posting as a Christian until you have some actual knowledge of what Christianity is all about.

The ACLU is a Jewish ran organization and they, along with certain other Jewish organizations, (the ADL, for one), are the ones attacking Christianity in the courts, demanding that anything Christian be removed from public display. It was the Jewish ACLU who went to court against prayer in public schools and won. Anything anti-Christ in the courts has Jews at its forefront. These are the Jews you are ranting and raving in favor of. These are the Jews who allow televangelists to use television as a medium to reach people like yourself and convince, people like yourself,that Jews are chosen by God and we should bow at their feet and condemn "antisemitism".

And no, it is not politically correct to hate Jews. Let a politician condemn Jews for what they are and you will quickly see a politician in hot water - boiling hot water. Let that same politician condemn the Pope or the Christ and you will see how quickly his rights to do so are protected. Remember the movie produced and directed by Mel Gibson, "The Passion of The Christ"? Remember how badly that was reviewed by the media and how it was condemned as "antisemitic" because the Jews were portrayed as being responsible for his murder? Now, look at the anti-Christ movies that have been coming out over the last few years. Not a word against them in the main stream media. These movies are made by Jews. And Jews own the mass media.

What is called "antisemitism", (anything that disagrees with Jews or Zionism is considered "antisemitism", even though few Jews are semitic and the majority of the semitic people in this world are the ones often referred to as middle eastern). Yes, Jews have been persecuted throughout the ages. They have been banished from so many countries the number seems unreal. A race or religion does not get banished simply because they/it are hated for their race/religion. They get banished because they do not fit well with others in the host country.

Please, stop trying to connect Jews to Christianity. If you take the time to read the New Testament, Jesus condemned those today known as Jews repeatedly throughout its entirety. He even said that they were not of His Father, but of the devil. Guess you couldn't get any more "antisemitic" than Jesus was. So, if you are trying to save someones soul from hell on here, I suggest you start with your own.

Thank you very much.

Really? Haven't XChristians been saying that for 200 years? How many people- Nero, Hitler, Bush- have supposedly been 'The Antichrist', now?


Demonstrate that:
-Your God exists
-Satan Exists and has servants
-'Good' exists
-'Evil' exists
-Satans servants are calling one the other and God is allowing it





Evidence? Has it ever occurred to you that the reason people dislike Israel is because it's a racist occupying force?



Yourself included.


Really? Actually, that'd be fat White males.




Actually, most of the world is neither Christian no 'Anti-Christian'; most nof the world practices other religions and make the same claims to truth that you do.




Really? Demonstrate that most people do such a thing.



Really? You know the thoughts of most people on Earth?



And you deny a personified Ahura Mazda, the truth of Allah, the existence of Karma, the need for Dharma.... according to alm,ost every other religion out there, you're in serious trouble. You have to yet to demonstrate that your claims are any more credible than theirs


Really? Was there a worldwide poll or something?



That does not follow logically

You're pretty stupid, aren't you? Evolution is an observed fact. The Theory of Evolution is a theory. It's pretty simple stuff, really.




You have that turned around pretty bass-akwards...



Really? Have you ever read up on the Standard Model? What you just said is false.


Evolution =/= Abiogenesis

Google is your friend



Your ignorance is showing... :no:



I wonder what happens if you Google this stuff...



:rollinglaugh:

Are you calling me pretty, (blush). Must be because I definitely am not stupid. And FYI, I am far too masculine to be considered pretty. LOL.

Had you read/comprehended what I wrote you would have quickly noted that I was referring to Darwins THEORY, (with THEORY being typed in bold face). I would not think there a need to reiterate the word THEORY everytime I wrote of evolution in that post.

OOPS....You forgot to mention that Standard Model is a THEORY. THEORYS are not considered facts. At best they are fanciful thought. Not a proven science; not considered a possibility or probability because there are few to no links to connect them to reality. REALITY is not connected to THEORY!


COLLECT $1,000,000

For you I would say :ban: Your last try failed you miserably. But, if you win the $1,000,000 cut this board in OK? :rollinglaugh:

I will believe in evolution when a monkey drives up to my door and explains it to me in great detail.

All evidence to the contrary


I know what you said. You tried to pull a Hovind and paint evolution as 'just a theory'. You're a liar- no surprise, seeing as you're a theist- and an idiot- no surprise, as you're a theist.


Had you read an understood what I said, and if you weren't a liar, you'd notice that I differentiated between the observed fact of evolution and the Theory of Evolution. It's kinda like the difference between the factual reality of gravity and the numerous theories that seek to explain this observed phenomenon



The fanciful delusion is the god hypothesis, which has not a single shred of evidence to support it and has never even been developed into a theory by any who adore it.



All available scientific evidence supports the theory, as anyone who could pass a middle school science quiz would know In fact, modern medicine is based around the verified fact that evolution occurs and has been observed. Ever heard of MRSA?






You're either incredibly stupid or a troll. A theory is only a theory if it can adequately explain reality, can make testable, falsifiable predictions, and be falsified if it turns out to be incorrect. Else, it remains a useless hypothesis, much like religion. Hence we have the Theory of Evolution, which seeks to explain the mechanisms behind the fact of evolution, and we have the moronic caveman stories that form the god hypothesis.





Linking to liars who refuse to consider any evidence presented- hosted on Geocities, none the less, does nothing to support your claim or remove the stench of your nature from you. Try finding some sources with a hint of credibility and actually refute the scientific evidence



Well, here's a chimp driving a Segway and a copy of the phylogenetic tree of life (simplified)


as well as a Gorilla who knows sign language and a link to abook written just for people like you. Go ahead and give us your full name, address, credit card number, confirmation (the last 3-4 numbers on the back) and pin numbers, and a bit of time, and we'll see if we can get Koko, the Segway, the chimp, and the book all delivered to your front door, using your credit card.

So how does anything you said prove that the genes from imaginary animals called common ancestors, turned into perfectly formed human genes?:eek: It doesn't any more than the fact that little people exist proves that "Lord of the Rings is True." Imaginary animals can't breed anything in reality because they come from the imaginations of men.

Anyone can draw a sketch. I can draw a sketch of how aliens turned into people as well. That's called artwork, not science.

Like "God"?



x

Theories and facts are not rungs in a heirachy of increasing certainty. This notion is false. Nor are facts and theories mutually opposed. We have facts, they are everywhere and they aren't terribly exciting. Theories are that which explain and interpret facts. Theories are the strongest form of explanation in science.

You don't think GERM THEORY is just fanciful thought do you?

They didn't come from imaginary beings. You're correct in saying my evidence doesn't state that. The evidence all points to Mankind evolving from real organisms I'd tell you all aobut Single Nucleotide Polymorphisms, but I'm pretty sure your severe mental retardation would prevent your understanding any of it. Suffice to say that if you believe DNA evidence can send someone to prison and determine who a whore's baby's daddy is, you believe in evolution.



Do define 'perfect' and bring me someone with 'perfect' DNA? Does that mean they have no Junk DNA or ERVs? We eagerly await your dissertation and tthe conclusions of your research when they are published ina respected scientific journal.



:rollinglaugh: You just argued that the bible is a pile of **** and you don't even know it ! :rollinglaugh:



Bring your DNA evidence, your fossil evidence, and anything else you have. Present it to Science, Cell- hell, it doesn't even have to be a peer-reviewed journal! Take your fossil and DNA evidence to NAtional Geographic and let us know when we can expect to see it hit the shelves

Quit calling me pretty.LOL



Careful with the names. That's one of two ways to get in trouble here. And I sure wouldn't want to see you get in trouble seeing as how you are an easy win for this "idiot". Might consider proof reading before posting also. Just so you don't look like a babbling idiot.


So, now we are going from the evolution of man to the evolution of medicine? Very interesting since there is no connection whatsoever. None. Nada. You see the evolution of medicine is much like the evolution of the automobile. As an example, I'll use Cadillac. Cadillac is said to have evolved as one of Americas finest automobiles from what could almost be called a dinosaur of a motor vehicle into what it is now: A sleeker, more durable and luxurious and dependable mode of transportation. This can be called "manipulated evolution", because it did not change on its own, man changed it. Just as with medicines, automobiles have been manipulated by man, (an intelligent life form), to become something better than they were in their original, man created, state. Medicines do not evolve on their own. Man changes them. He manipulates them into becoming what he wants them to be.He takes something he created and improves upon it. Do you think maybe God did the same with jellyfish to men? Interesting theory. But still just a theory. Just a thought, but do you think the new and improved Tide can someday evolve into a box of Borax?

Unsimplify your "little tree of life" and show me all the stages the jellyfish went through to become insects. Show me which insect they first became. Why hasn't science located any of these 1/2 jellyfish 1/2 insects after all of these years of study? Because they do not exist.

Had me on the one with the primate doing sign language. All this time I thought that was Al Sharpton gaining a higher education. As for him, (the gorilla, not Sharpton....maybe Sharpton too) and your monkey driving a car, that is trained behavior. Can you say that: TRAINED BEHAVIOR. Thank you. That is the same thing as teaching your dog to roll over and play dead - it is trained.


Let me put it to you gently son, if evolution of man were possible, don't you think science could have at least made some little progress in a test tube showing its possibility? I wonder if the cave man believed in evolution. It does make about as much sense as the world being flat.

Carry on sir. I am sure your hatred for a higher power will help you locate some other little piece of "evidence" that evolution of man is a fact.

:rollinglaugh:

RAWR!!! thank u damnit!!! :thumbup::thumbup: . Carico.. pay attention to this one!