New world migrations.
DNA analyses have hinted at a number of possible dates and patterns for the peopling of the Americas.
1 Early mitochondrial DNA analyses suggested three waves of migration that correspond to three Native American language groups--Amerind (brown arrow), Na-Dene (blue arrow) and Eskaleut (orange arrow).
2 Another study suggests that a founding group of up to 5,400 people settled in Beringia (blue arrow) and later moved south and east, once the snow blocking their entry into the heart of the Americas melted (SN: 2/16/08, p. 102).
3 Analyses of two rare sequences of mitochondrial DNA suggest that two separate groups trekked across the land bridge and went their separate ways. Other groups may have also made separate entries (SN: 1/31/09, p. 5).
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|Title Annotation:||Back Story|
|Date:||Mar 13, 2010|
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