贵州四个民族耳垂群体遗传学初步研究

Study on Population Genetics of Ear Lobes in Four Nationalities of Guizhou Province

目的:了解贵州少数民族人群耳垂基因频率分布特征,为国人群体遗传学研究积累资料。方法:对2465名双亲均为同一民族的布依、苗、水、汉族者的耳垂形态进行活体观察,并根据Hardyweinberg定律推算耳垂基因频率。结果:贵州南部地区布依、苗、水、汉族群体显性基因频率分别为0.4607、0.2830、0.4843、0.3645,隐性基因频率分别为0.5397、0.7170、0.5156、0.6355。结论:人类耳垂显性基因频率低于隐性基因频率,且其分布存在民族、性别等差别。

Objective: To understand the distributive character of gene frequencies ear loles of national minorities in Guizhou, and provide information of human population genetics. Methods: A somatological survey on 2 465 Buyi, Miao, shui and Han people (male 1 198, female 1 267, aged from 10 to 55) living in the south of Guizhou Province was made in July 1999, whose parents was same nationality. The gene frequencies of ear loles were calculated out according to the Hardy-Weinberg Law. Results: The frepucncy of dominant gene of ear lokes in Buyi, Miao, Shui and Han population were 0.4607, 0.2830, 0.4843, 0.3645, and that of recessive gene were 0.5393, 0.7170, 0.5156, 0.6355 respectively. Conclusion: The frequency of dominant gene of ear lokes was lower than that of recessive gene in four nationalities in the south of Guizhou, Province and there were differences about the distributive featare of gene frequency between nationalities, sex, and so on.