Re: Most recent common ancestors

lostcooper@xxxxxxxxx wrote: 
When you speak of "race mixing" among Native Americans and Europeans,
you need to remember that there is no single genetic "type" of Native
American and there probably never was, just as there has never been a
single language group or physical type.


Not an exact single type, but Y-chromosome haplogroup Q3 really
truly DOES mean "American". True, some Siberians are Q3,
but they are clearly back-migraters. Y-Haplogroup Q* is
present in both America and northern Eurasia, but there are
quite clear haplotypes within it that distinguish American
Q* from Eurasian Q*. And the vast majority of native
American men were, in 1491, Q* or Q3. True, some were and are
C, and that muddies things since C is common in Siberia and
Oceania, but again the haplotypes distinguish fairly well.

The mitochondria are a different matter since A, B, C, and D
are quite sommon in both America and east Asia, and X is present
at low rates in America and Europe.

It is quite clear now that the autosomes, in aggregate, quite
clearly distinguish Asian from American.

Doug McDonald
.

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