中文摘要：

分析黎族、海南回族、仡隆人群中Y染色体单倍型（Y-SNP）的分布，从遗传学角度研究3个人群的起源。选取部分与东亚人群起源相关的Y染色体非重组区单核苷酸多态性位点，采用PCR-RPLF和geno-typing法分析其多态性，观察由这些多态性位点组成的单倍型在海南3个人群中的分布情况，并将结果与其他人群的分布进行比较。结果在黎族人群中发现4种Y染色体单倍型，其中单倍型O^＊-175为5个支系所共有，且分布频率都在95％以上。回族人群出现4种单倍型，仡隆人群有2种单倍型。由单倍型种类、频率分布及主成分分析均揭示，黎族与台湾原住民及百越最为接近，可能有共同的起源。海南回族与中国北方回族遗传关系较远；仡隆人群与汉族差异较大。而与百越的仡佬族、水族及黎族遗传关系接近。

英文摘要：

This paper explores the origins of the three minority populations （Li, Hainan-Hui and Gelong） in Hainan Island by analyzing the frequency of Y-chromosome haplotype of six Y-SNP alleles in 410 male individuals, selecting six Y chromosome biallelic markers located at the nonrecombining portion by using PCR-RFLP. Four haplotypes were detected in Li ethnic group.The O^＊-M175 haplogroup is common and predominant （frequency 〉95） in all branch groups of Li. Four haplotypes exist in Hui ethnic group and 2 in Gelong population. The principal component analysis of SNP haplotype distribution shows that Li ethnic groups, Paiwan, Ataya and Baiyue might origin from a common ancestry. Hainan-Hui ethnic group is different from Hui population in north China and other areas, and there is a close relationship among Gelong, Li and Gelao populations.