Cytogenetics Laboratory, Department of Zoology, Banaras Hindu University, Varanasi, 221005, India.
Estonian Biocentre, Institute of Genomics, University of Tartu, Tartu, 51010, Estonia.
Eur J Hum Genet. 2021 Mar;29(3):528-532. doi: 10.1038/s41431-020-00745-1. Epub 2020 Oct 21.
The phylogenetic analysis of Y chromosomal haplogroup O2a-M95 was crucial to determine the nested structure of South Asian branches within the larger tree, predominantly present in East and Southeast Asia. However, it had previously been unclear that how many founders brought the haplogroup O2a-M95 to South Asia. On the basis of the updated Y chromosomal tree for haplogroup O2a-M95, we analysed 1437 male samples from South Asia for various novel downstream markers, carefully selected from the extant phylogenetic tree. With this increased resolution of genetic markers, we were able to identify at least three founders downstream to haplogroup O2a-M95, who are likely to have been associated with the dispersal of Austroasiatic languages to South Asia. The fourth founder was exclusively present amongst Tibeto-Burman speakers of Manipur and Bangladesh. In sum, our new results suggest the arrival of Austroasiatic languages in South Asia during last 5000 years.
对 Y 染色体单倍群 O2a-M95 的系统发生分析对于确定南亚支系在更大的东亚和东南亚范围内的嵌套结构至关重要。然而，此前尚不清楚有多少个创始者将 O2a-M95 单倍群带到了南亚。基于更新的 O2a-M95 染色体树，我们对南亚的 1437 名男性样本进行了各种新的下游标记分析，这些标记是从现存的系统发生树上仔细挑选出来的。通过增加遗传标记的分辨率，我们能够鉴定出至少三个位于 O2a-M95 单倍群下游的创始者，他们可能与澳亚语系向南亚的传播有关。第四个创始者仅存在于曼尼普尔邦和孟加拉国的藏缅语族中。总之，我们的新结果表明，澳亚语系在过去 5000 年中到达了南亚。
