echi wrote:The best I can figure is that the fusion of the two pronuclei (from the sperm and the ovum) indicates the presence of a human person.
At this stage, the zygote contains its own, unique (human) DNA;
It is developmentally active (assuming that it survives);
And, it reacts to stimuli.
The fact that it reacts to stimuli seems to show a capacity for preference and, therefore, some sense of awareness. I admit that it does seem pretty extreme to think that a zygote could be aware of anything. I don't claim to understand how that could be, nor do I claim to understand the nature of my own sense of awareness.
But, because I can find no reason to draw a line at any other point, I can only assume that it traces back to fertilization.
That makes sense echi, if you are determined to find a definitive black and white solution. The truth as I see it, is that a sperm and an egg, a zygote, a foetus are all parts of the gradual process of becoming a living human being. I think a foetus at 39 weeks is perhaps 1000 times more "living human being" than a foetus at 12 weeks. I think this is actually the common view, although most people don't think about it in such terms. To demonstrate why I think this...compare the reaction of people why miscarry at 12 weeks or less (estimated at 50%, many never become public knowledge and many are not even known by the mother to have existed) to those who miscarry at 39 weeks (then called a still birth).
Now, with that in mind, and knowing that making abortion illegal will, without doubt, reduce the number of overall abortions, but INCREASE the number of later, dangerous, backyard abortions....do you still want abortion to be equal to murder?...and miscarriage to be treated as any other accidental death? You have to deal with these issues if you insist on a black and white definition at conception, you can't have it both ways.
As I've said many times, I think abortion is a
bad thing, but I think making abortion illegal is far
worse.
By the way, remember the thing with the hair?....those cells contain a complete set of dna that can be used to clone you an identical twin. Is it wrong NOT to allow those cells to become someone? If you actually went ahead and did it, and you asked that person as an adult if you thought human cloning was a good idea, what answer would you expect?
(Identical twins have identical DNA, so uniqueness of DNA itself is not a defining criterion for a human being)