Genetic Variance

Ancestry by DNA Ancestry Map

AncestrybyDNA has a chart of their genetic tests and variance which illustrates (not conclusively though) that certain populations are more mixed than others.

Those which they have found to be more diverse as per their own definitions of ‘well-defined populations’ are:

  • South Asians;
  • North Africans;
  • Pacific Islanders;
  • American Indians and;
  • Mexicans.

Some data seems problematic as in the low East Asian contribution to indigenous (true) Americans, their inclusion of South Asians and Middle Easterners in the European clade and the separation of the ‘Native’ American and East Asian clades. They don’t state any rigorous reason for their cladistic definitions (see BioGeographical Ancestry). Assumptions also present problems but this is inherent to all extrapolations.

African contribution (over 5%) was found in:

  • African Americans;
  • North Africans;
  • Puerto Ricans;
  • Middle Easterners;
  • Iberians;
  • South Asian Indians; and
  • Mexicans.

East Asian contribution (over 5%) was found in:

  • North Africans;
  • Turks;
  • South Asian Indians;
  • Chinese;
  • Japanese;
  • Atayals;
  • South East Asians;
  • Pacific Islanders; and
  • American Indians.

Indigenous American contribution (over 5%) was found in:

  • Puerto Ricans;
  • Iberians;
  • Italians;
  • South Asian Indians;
  • South East Asians;
  • Pacific Islanders; and
  • Mexicans.

If one were to join the American and East Asian clades, the following populations have the most Asian ancestry:

  • Puerto Ricans (12.4%);
  • Italians (10%);
  • Turks (12.4%);
  • South Asian Indians (36%);
  • South East Asians (88.5%);
  • Pacific Islanders (71.6%); and
  • Mexicans (51.2%).

 

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9 thoughts on “Genetic Variance

  1. Pingback: Forensic Anthropology | Ethnic Muse

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