Polynesian origins: Insights from the Y chromosome
Polynesian origins: Insights from the Y chromosome
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DOI：
10.1073/pnas.97.15.8225
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发表时间：
2000-07-18
影响因子：
11.1
通讯作者：
Deka, R
中科院分区：
文献类型：
--
作者：
Su, B;Jin, L;Deka, R
围绕波利尼西亚殖民化的问题一直存在争议。两种假设，一种假设台湾是假定的家园，另一种主张波利尼西亚人的美拉尼西亚起源，受到了相当大的关注。在这项工作中，我们基于生活在东南亚、台湾、密克罗尼西亚、美拉尼西亚和波利尼西亚的36个人群的551个男性个体的Y染色体上19个双等位基因多态性的单倍型数据。令人惊讶的是，在密克罗尼西亚和波利尼西亚几乎没有发现台湾的Y单倍型。同样，在波利尼西亚人中也没有发现美拉尼西亚特有的单倍型。然而，所有的波利尼西亚人、密克罗尼西亚人和台湾人的单倍型都存在于现存的东南亚人群中。显然，y染色体的数据并不能支持这两种流行的假设。相反，我们假设东南亚为两次独立的迁徙提供了遗传来源，一次是向台湾迁徙，另一次是通过东南亚岛屿向波利尼西亚迁徙。
The question surrounding the colonization of Polynesia has remained controversial. Two hypotheses, one postulating Taiwan as the putative homeland and the other asserting a Melanesian origin of the Polynesian people, have received considerable attention. In this work, we present haplotype data based on the distribution of 19 biallelic polymorphisms on the Y chromosome in a sample of 551 male individuals from 36 populations living in Southeast Asia, Taiwan, Micronesia, Melanesia, and Polynesia. Surprisingly, nearly none of the Taiwanese Y haplotypes were found in Micronesia and Polynesia. Likewise, a Melanesian-specific haplotype was not found among the Polynesians. However, all of the Polynesian, Micronesian, and Taiwanese haplotypes are present in the extant Southeast Asian populations. Evidently, the Y-chromosome data do not lend support to either of the prevailing hypotheses. Rather, we postulate that Southeast Asia provided a genetic source for two independent migrations, one toward Taiwan and the other toward Polynesia through island Southeast Asia.