Population genetic structure in Indian Austroasiatic speakers: the role of landscape barriers and sex-specific admixture.

ABSTRACT: The geographic origin and time of dispersal of Austroasiatic (AA) speakers, presently settled in south and southeast Asia, remains disputed. Two rival hypotheses, both assuming a demic component to the language dispersal, have been proposed. The first of these places the origin of Austroasiatic speakers in southeast Asia with a later dispersal to south Asia during the Neolithic, whereas the second hypothesis advocates pre-Neolithic origins and dispersal of this language family from south Asia. To test the two alternative models, this study combines the analysis of uniparentally inherited markers with 610,000 common single nucleotide polymorphism loci from the nuclear genome. Indian AA speakers have high frequencies of Y chromosome haplogroup O2a; our results show that this haplogroup has s

SUBMITTER: Chaubey G 

PROVIDER: S-EPMC3355372 | biostudies-literature | 2011 Feb

REPOSITORIES: biostudies-literature