Re: OT: Why Don't We Look Like Bacteria?

"Prokaryotes never got the chance to evolve this complexity because
their
populations were so large that natural selection blocked the early
stages of
its evolution. "There was one lucky lineage that became us eukaryotes,"
Dr. Lynch"

Hi, Jois,
I'm not sure I see what his argument is. With billions of
bacteria, the chance that a particular one of them might become a
eukaryote could be small, but that some one of them would isn't.
The chance I will win the lottery is 135,000,000 to one for one ticket,
but someone is always winning it.
Eukaryotes had several advantages for competing. DNA is more
stable and can be corrected, since it has the complementary strand.
The actual construction of a protein is not done from the coding
strand, but from the mRNA, so the coding strand may be less likely to
be damaged in the process. Just offhand from a layman, -there may be
other advantages.-_
The surprise is, "How were bacteria able to survive the
competition?' Since they provide the majority of biomass, they seem
to have done it. IIRC, they have a number of copies of genetic
material and so are masters of quick response.
Regards
John GW

.

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