从群体遗传的DNA线索看东乡族族源问题

The Origin of the Dongxiang: A Study from the Perspective of DNA in Population Genetics

DNA分析技术的发展为进行民族识别和分析民族起源、迁徙、流动、融合提供了新手段。本文在国内外首次应用D13S317基因座第 11号等位基因频率指标 ,计算了东乡族群体遗传动态数据。结果发现 ,东乡族和回族遗传距离很近 ,且东乡族中具有白种人血缘混杂。结合其他有关资料 ,我们认为东乡族的起源与元代蒙古军带来的中亚工匠、签军有关 ,亦与当地蒙古族、回族、藏族人群的融合有关。

The development in the technology of DNA analysis provides a new method for ethnic identification and the researches of the origin, migration and merging of the ethnic groups. By means of the frequencies of the eleventh allele of D13S317 loci, this paper, for the first time both domestically and abroad, counts the dynamic data of the population genetics among the Dongxiang people. It is found out that lineage distance between the Hui and Dongxiang peoples is very close and that there is Caucasian admixture among the Dongxiang. With the reference of other materials, the authors deem that the origin of the Dongxiang relates to the Central Asian artisans and troops brought along by the Mongolian troops in the Yuan Dynasty on the one hand, and to their merging with the local Mongolians, Huis and Tibetans on the other. The findings of this paper can provide the ethnic studies with a clue from population genetics.