Negrito mtDNA admixture in Southeast ...

Negrito mtDNA admixture in Southeast Asians

Posted in the African-American Forum


Gillingham, UK

#1 Mar 25, 2012
I'm surprised Southeast Asia have Black admixture although it's heavily diluted according to autosomal DNA map, any southeast Asians with negrito blood is usually less than 2%. They resemble the dark brown skinned Asian Taiwanese aborigines and ethnic minorities in southern China who have no Black admixture. But have broad nose and double eyelid phenotypes, and somewhat wavy hair.

Negrito mtDNA M21a and M21b are maternal lineage of Semangs tribes ranging from 52%-87% in frequencies

It's found in 8% of Malaysians and 7.73% of Thai people. It's also found 2.5% in Borneo and low frequencies. There seem to no Negrito Y-DNA in Thailand or Malaysia. SURPRISINGLY, there is no evidence of negrito DNA in Cambodians, they have only some Indian admixture.
But however Filipino also have small frequencies of Negrito mtDNA 2.70% with negrito Y-DNA 6%.(Y-DNA is an paternal lineage). In the Melanesia the genetics is mostly between Melanesian Y-DNA and Asian mtDNA with some Asian Y-DNA and Melanesian mtDNA. In Polynesia it's only some Asian Y-DNA with almost all Asian mtDNA. With only small Melanesian mtDNA with mostly melansian Y-DNA.

However all these admixture is believed to have happened 3000-4000 years which means only small amount of mixing took place, with the hybrid population assimilated with newcomers.

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