东亚
单倍群
远东
单倍型
地理
东南亚
进化生物学
生物
古代史
历史
遗传学
中国
考古
等位基因
基因
作者
Xiaoyun Cai,Zhaoyu Qin,Bo Wen,Shuhua Xu,Yi Wang,Yan Lü,Lan‐Hai Wei,Chuan‐Chao Wang,Shilin Li,Huang Xing-qiu,Jin Li,Hui Li
出处
期刊:PLOS ONE
[Public Library of Science]
日期:2011-08-31
卷期号:6 (8): e24282-e24282
被引量:86
标识
DOI:10.1371/journal.pone.0024282
摘要
Molecular anthropological studies of the populations in and around East Asia have resulted in the discovery that most of the Y-chromosome lineages of East Asians came from Southeast Asia. However, very few Southeast Asian populations had been investigated, and therefore, little was known about the purported migrations from Southeast Asia into East Asia and their roles in shaping the genetic structure of East Asian populations. Here, we present the Y-chromosome data from 1,652 individuals belonging to 47 Mon-Khmer (MK) and Hmong-Mien (HM) speaking populations that are distributed primarily across Southeast Asia and extend into East Asia. Haplogroup O3a3b-M7, which appears mainly in MK and HM, indicates a strong tie between the two groups. The short tandem repeat network of O3a3b-M7 displayed a hierarchical expansion structure (annual ring shape), with MK haplotypes being located at the original point, and the HM and the Tibeto-Burman haplotypes distributed further away from core of the network. Moreover, the East Asian dominant haplogroup O3a3c1-M117 shows a network structure similar to that of O3a3b-M7. These patterns indicate an early unidirectional diffusion from Southeast Asia into East Asia, which might have resulted from the genetic drift of East Asian ancestors carrying these two haplogroups through many small bottle-necks formed by the complicated landscape between Southeast Asia and East Asia. The ages of O3a3b-M7 and O3a3c1-M117 were estimated to be approximately 19 thousand years, followed by the emergence of the ancestors of HM lineages out of MK and the unidirectional northward migrations into East Asia.
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