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Archiver > GENEALOGY-DNA > 2002-09 > 1031175185
From:
Subject: Re: [DNA] Toba bottleneck
Date: Wed, 4 Sep 2002 17:33:05 EDT
In a message dated 9/4/02 1:27:42 PM Pacific Daylight Time,
writes:
>
> Lake Mungo, by the way, as discussed on this list recently, is a problem
> for any bottleneck theory, as it shows mtDNA unlike any modern population
> in 60 KA fossils.
I'm not sure what was discussed about Lake Mungo. I do not recall that
discussion. And I don't understand why DNA from 60,000 BP would cause
problems for the bottleneck theory. What does that have to do with it?
Several isolated pockets of humanity might have survived a bottleneck.
Neanderthal survived until recent times.
However, I recall reading that extracting DNA from specimens that old is
questionable at best. Has anyone replicated that research? Also, I'm pretty
certain that the majority of mtDNA that has ever existed is no longer found
in modern humans. Even if we is qualify that statement by saying "human
mtDNA" it seems likely that most variants no longer exist in living
population. If the Mitochondrial Eve theory is accepted all other forms of
human mtDNA died out. It doesn't say when the last one went extinct.
I got to go. I do a radio show on Wednesday afternoon.
Grant
According to that theory "Eve's" mtDNA, and variants of it, are the only ones
that survive in modern humans. I don't think that suggest the other forms
died out while Eve was alive. Some of the other types might have existed into
modern times.
"The nice part about living in a small town is that when you don't know what
you're doing, someone else does." -- Unknown,
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