АвторТема: Y-DNA phylogeny reveals two neolithic expansions of Tibeto-Burman populations  (Прочитано 1004 раз)

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Reconstruction of Y-chromosome phylogeny reveals two neolithic expansions of Tibeto-Burman populations

    Ling-Xiang Wang
    Yan Lu
    Chao Zhang
    Lan-Hai Wei
    Shi Yan
    Yun-Zhi Huang
    Chuan-Chao Wang
    Swapan Mallick
    Shao-Qing Wen
    Li Jin
    Shu-Hua Xu
        23489Email author
    Hui Li
        19Email author

    1.MOE Key Laboratory of Contemporary AnthropologyFudan UniversityShanghaiChina
    2.Chinese Academy of Sciences (CAS) Key Laboratory of Computational Biology, Max Planck Independent Research Group on Population Genomics, CAS-MPG Partner Institute for Computational Biology (PICB), Shanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
    3.University of Chinese Academy of SciencesBeijingChina
    4.School of Life Science and TechnologyShanghaiTech UniversityShanghaiChina
    5.Institut National des Langues et Civilisations OrientalesParisFrance
    6.Department of Anthropology and EthnologyXiamen UniversityXiamenChina
    7.Department of GeneticsHarvard Medical SchoolBostonUSA
    8.Center for Excellence in Animal Evolution and GeneticsChinese Academy of SciencesKunmingChina
    9.Collaborative Innovation Center of Genetics and DevelopmentShanghaiChina

Original Article
First Online: 19 June 2018


Diffusion of Tibeto-Burman populations across the Tibetan Plateau led to the largest human community in a high-altitude environment and has long been a focus of research on high-altitude adaptation, archeology, genetics, and linguistics. However, much uncertainty remains regarding the origin, diversification, and expansion of Tibeto-Burman populations. In this study, we analyzed a 7.0M bp region of 285 Y-chromosome sequences, including 81 newly reported ones, from male samples from Tibeto-Burman populations and other related Eastern Asian populations. We identified several paternal lineages specific to Tibeto-Burman populations, and most of these lineages emerged between 6000 and 2500 years ago. A phylogenetic tree and lineage dating both support the hypothesis that the establishment of Tibeto-Burman ancestral groups was triggered by Neolithic expansions from the middle Yellow River Basin and admixtures with local populations on the Tibetan Plateau who survived the Paleolithic Age. Furthermore, according to the geographical distributions of the haplogroups, we propose that there are two Neolithic expansion origins for all modern Tibeto-Burman populations. Our research provides a clear scenario about the sources, admixture process and later diffusion process of the ancestor population of all Tibeto-Burman populations.

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