Re: DNA growth... Where and how does this happen?
- From: Tim Tyler <tim@xxxxxxxxxxx>
- Date: Sun, 7 Aug 2005 01:24:14 -0400 (EDT)
MicroTech <henry@xxxxxxxxxxxxxxxxxxxx> wrote or quoted:
> I have scoured countless web pages and read all kinds of books on
> evolution, genetics, bio/organic chemistry etc etc, but nowhere can I
> find any references to WHERE in the human system "new" base pairs are
> added to the mighty DNA double helix, or what triggers the addition of
> such new "code". Closely related is the question on which DNA that is
> used as the "Master" molecule to be copied into the sperm/egg
> chromosomes: would this not be the only place where "random
> mutations" could occur?
>
> It seems obvious to me that, on the long and winding path from the
> first prokaryote DNA to my own personal genome, there has been many new
> base pairs added over the 3 500 000 000 or so years since the process
> started (AFASK). Opinions differ on the size of the human genome, but
> there seems to be an informal consensus around the value 3 500 000 000
> (nucleotide base pairs)-neat coincidence, an average of one new base
> pair per year!
Search on "indels".
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