Genetic history of indigenous peoples of the Americas
From The Art and Popular Culture Encyclopedia
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The genetic history of indigenous peoples of the Americas primarily focuses on Human Y-chromosome DNA haplogroups and Human mitochondrial DNA haplogroups. Autosomal "atDNA" markers are also used, but differ from mtDNA or Y-DNA in that they overlap significantly. The former is the determinant factor for the number of gene lineages, zygosity mutations and founding haplotypes present in today's Indigenous Amerindian populations.
Analyses of genetics among Amerindian and Siberian populations have been used to argue for early isolation of founding populations on Beringia and for later, more rapid migration from Siberia through Beringia into the New World. The microsatellite diversity and distributions of the Y lineage specific to South America indicates that certain Amerindian populations have been isolated since the initial colonization of the region. The Na-Dené, Inuit and Indigenous Alaskan populations exhibit Haplogroup Q-M242; however, they are distinct from other indigenous Amerindians with various mtDNA and atDNA mutations. This suggests that the peoples who first settled the northern extremes of North America and Greenland derived from later migrant populations than those who penetrated farther south in the Americas. Linguists and biologists have reached a similar conclusion based on analysis of Amerindian language groups and ABO blood group system distributions.
See also
- Archaeogenetics
- Archaeogenetics of the Near East
- Archaeology of the Americas
- Ancient DNA
- Clovis culture
- Early human migrations
- Genetic history of Africa
- Genetic history of Europe
- Genetic history of Italy
- Genetic history of North Africa
- Genetic history of the British Isles
- Genetic history of the Iberian Peninsula
- Genetics and archaeogenetics of South Asia
- Human timeline
- Life timeline
- Haplogroups of historical and famous figures
- Nature timeline
- Race and genetics
- Y-chromosome haplogroups by populations