Reconstructing Native American population history.

In contrast, 4 populations from northern North America show highly significant evidence of ancestry from additional streams of gene flow from Asia, subsequent to the initial peopling of America, which we confirm through the Hotelling T- test and a complementary test ( Note S6 ): East Greenland Inuit (P<10 −9 ), West Greenland Inuit (P<10 −9 ), Aleutian Islanders (P=9×10 −5 ) and Chipewyan (P<10 −9 ).

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