怒江大峡谷及下游地区7个云南少数民族YAP位点的多态性研究

POLYMORPHISMS OF YAP IN 7 YUNNAN ETHNIC GROUPS ALONG THE NU RIVER VALLEY

本文以怒江大峡谷及下游地区的独龙族、怒族、傈僳族、阿昌族、景颇族、德昂族和傣族 7个云南特有少数民族为对象 ,利用PCR分型法筛查Y染色体特异区YAP位点的多态性分布。结果显示 :怒族的YAP+ 频率为 1 82 %,景颇族为 12 5 0 %,傣族为 10 0 0 %,其他 4个民族群体均为YAP-。

Dulong, Nu, Lisuo, Achang, Jingpo, Dai and De'ang ethnic groups live along the Nu river valley in Yunnan Province, China. According to historical records, the Nu river valley is an important migrating route of ancient Diqiang tribes. Dulong, Nu, Lisuo, Jingpo and Achang are the descendants of Diqiang people; Dai belongs to the ancient Baiyue tribes; De'ang is the descendant of Baipu tribes. YAP (Y Alu polymorphism), located in Y specific region, is considered to be one of the best markers to study human evolution and migration. The polymorphisms of YAP in these 7 ethnic groups living along the Nu river valley in Yunnan Province were investigated. The results are that the YAP element is present in Nu (1.82%), Jingpo(12.5%) and Dai (10%), but absent in the other 4 ethnic groups. The frequencies of YAP + are similar in all populations from old Diqiang people except Jingpo along the Nu river valley, coinciding with the reported data of the other descendents of Diqiang. The frequency of YAP + in Dulong is different from that of Jingpo, which does not support that the Dulong language belongs to Jingpo language branch. The widely different frequencies of YAP + between Dai and De'ang indicate that they derived from the different ancient tribes.