Schroeder K B, Schurr T G, Long J C, Rosenberg N A, Crawford M H, Tarskaia L A, Osipova L P, Zhadanov S I, Smith D G
Department of Anthropology, University of California, Davis, CA 95616, USA.
Biol Lett. 2007 Apr 22;3(2):218-23. doi: 10.1098/rsbl.2006.0609.
The three-wave migration hypothesis of Greenberg et al. has permeated the genetic literature on the peopling of the Americas. Greenberg et al. proposed that Na-Dene, Aleut-Eskimo and Amerind are language phyla which represent separate migrations from Asia to the Americas. We show that a unique allele at autosomal microsatellite locus D9S1120 is present in all sampled North and South American populations, including the Na-Dene and Aleut-Eskimo, and in related Western Beringian groups, at an average frequency of 31.7%. This allele was not observed in any sampled putative Asian source populations or in other worldwide populations. Neither selection nor admixture explains the distribution of this regionally specific marker. The simplest explanation for the ubiquity of this allele across the Americas is that the same founding population contributed a large fraction of ancestry to all modern Native American populations.
格林伯格等人提出的三波迁徙假说已渗透到有关美洲人口的遗传学文献中。格林伯格等人提出，纳德内语系、阿留申 - 爱斯基摩语系和美洲印第安语系是代表从亚洲到美洲的不同迁徙的语系。我们发现，常染色体微卫星位点D9S1120上的一个独特等位基因存在于所有抽样的北美和南美人群中，包括纳德内人和阿留申 - 爱斯基摩人，以及相关的白令海峡西部群体中，平均频率为31.7%。在任何抽样的假定亚洲源人群或其他全球人群中均未观察到该等位基因。选择和混合都无法解释这个区域特异性标记的分布。对于这个等位基因在美洲各地普遍存在的最简单解释是，同一批奠基人群为所有现代美洲原住民群体贡献了很大一部分祖先基因。
