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Deep roots for Aboriginal Australian Y chromosomes


Bergstrom, A; Nagle, N; Chen, Y; McCarthy, S; Pollard, MO; Ayub, Q; Wilcox, S; Wilcox, L; van Oorschot, RA; McAllister, P; Williams, L; Xue, Y; MITCHELL, RJ; Tyler-Smith, C
2016-03-21
2016-02-23
Curr Biol
Journal Article
26
6
809-13
Australia was one of the earliest regions outside Africa to be colonized by fully modern humans, with archaeological evidence for human presence by 47,000 years ago (47 kya) widely accepted [1, 2]. However, the extent of subsequent human entry before the European colonial age is less clear. The dingo reached Australia about 4 kya, indirectly implying human contact, which some have linked to changes in language and stone tool technology to suggest substantial cultural changes at the same time [3]. Genetic data of two kinds have been proposed to support gene flow from the Indian subcontinent to Australia at this time, as well: first, signs of South Asian admixture in Aboriginal Australian genomes have been reported on the basis of genome-wide SNP data [4]; and second, a Y chromosome lineage designated haplogroup C *, present in both India and Australia, was estimated to have a most recent common ancestor around 5 kya and to have entered Australia from India [5]. Here, we sequence 13 Aboriginal Australian Y chromosomes to re-investigate their divergence times from Y chromosomes in other continents, including a comparison of Aboriginal Australian and South Asian haplogroup C chromosomes. We find divergence times dating back to approximately 50 kya, thus excluding the Y chromosome as providing evidence for recent gene flow from India into Australia.
Cell Press
Systems Biology and Personalised Medicine
10.1016/j.cub.2016.01.028
26923783
Refer to copyright notice on published article.

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Creation Date 2016-03-15 03:47:42 Last Modified 2016-05-09 12:44:28