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December 8, 2019, 9:36 pm UTC    
July 25, 2015 01:08PM
Duncan Craig Wrote:
-------------------------------------------------------
> This data is so complex to my simple laymens mind.
> Craniometric studies strke me as something out of
> the nineteenth century. Are they still accepted as
> evidence when they contradict DNA?

I never thought that Neves' Paleoamerican data contradicted DNA because New World mtDNA haplogroup B appears to have originated in SE Asia. When the Tianyuan Cave individual was determined to have a sequence belonging to that haplogroup, this seemed to support the view. Like the mtDNA, the nuclear DNA was described as follows:

"The nuclear DNA sequences determined from this early modern human
reveal that the Tianyuan individual derived from a population that
was ancestral to many present-day Asians and Native Americans
but postdated the divergence of Asians from Europeans."

Then there's the nearby Zhoukoudian upper cave specimens which are said to lack Mongoloid physiognomy. I have been trying to follow a trail along these lines. As for Onge - I do not have a clue how they might fit in except that the neighboring Nicobarese and Shompen have high frequencies of haplogroup B5 (as opposed to Polynesian and Native American B4) sequences.

I did not expect the Kennewick Man's haplogroup X classification but a trail similar to the one above could be made by following N(xR) mtDNA sequences. These include Australian aborigine haplogroups, Ainu Y/N9 and New World A & X. Like most N(xR) haplogroups NIvkhi/Ainu haplogroup Y is pretty rare but it is found in higher frequencies around the island of Sumatra (and relatively close to the Andaman Isles).

In some respects, the mtDNA sequences of eastern coast of Asia look like a continuation of SE Asian populations. Travel, then, must have been by water as opposed to by land.

I don't know if all of the above are valid connections but these are some possibilities, Duncan.


> And how can an "unexpected link between Amazonians
> and Pacific Islanders" be seen as supportive of
> traditional Bering Strait migration models? What
> am I missing? I was under the impression that it
> was people that carried the genes. Giselle?
>
>
>
> qrising.com


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