rosborne979 wrote:real life wrote:
Hi Ros,
The point is that you propose that DNA ( I know, and other predecessors) carried encoded information for building a cell, before any cell had existed.
No. Rudimentary DNA did not necessarily need to code for cell walls. It migth have simply coded for replication and production of proteins which bound to lipid spheres in which surface tension functioned as the cell wall. Modern DNA happens to require a cell to protect it, but it is quite evolved at this point. You are skipping too many steps in your assumptions and drawing premature conclusions.
Hi Ros,
Whether you propose a cell wall as we know it today or another protective mechanism such as the lipid spheres is really beside the point; the question remains which you did not address: Where did the information (for the protective layer, as well as for everything else) come from?
At some point, DNA or it's predecessor(s) which you postulate must have existed for quite some time, and quite a few 'generations' of replication WITHOUT protection, no?
If a 'lucky' DNA (or xNA) had just 'happened' into a situation where it fell in among some lipid spheres which protected it, then this molecule would not have had the encoded information regarding the lipids to pass on to the next 'generation', would it?
It couldn't just luck into this (or else it would not be passed on) , it had to produce it; so where did the information come from?
You recognize, I'm sure, how even a simple function such as a protective layer requires a large amount of information. It doesn't just happen.