摘要
采用PCR技术分析中国壮族、白族、藏族和蒙古族4个群体中D19S400基因座的遗传多态性,获得了该4个群体D19S400基因座的群体遗传学数据。从356份分别采自南宁壮族、大理白族、拉萨藏族和海拉尔蒙古族4个群体的无血缘关系个体的静脉血,共发现9个等位基因,观察到40种基因型。观察杂合度为0.75~0.89,个人识别机率为0.9274~0.9625。观察到的基因型频率分布符合Hardy-Weinberg平衡定律。等位基因频率的分布在4个群体之间有显著性差异。作者认为D19S400基因座个人识别能力高,方法简便、灵敏、重复性好,在法医学个人识别和亲子鉴定应用中有较高的价值。
Four Chinese populations have been studied by the polymerase chain reaction (PCR) for obtaining the data on genetic polymorphisms of D19S400 locus in four populations in China and for evaluating its use in forensic practice. EDTA blood samples were collected from 356 unrelated individuals in Nanning (Zhuang), Dali (Bai), Lasa (Tibetan); Hailaer (Mongolian), DNA samples were extracted by Phenol/Chloroform method. The PCR products were analyzed by PAG vertical electrophoresis. Nine alleles and 42 genotypes were found at D19S400 locus in these four populations. The heterozygosity was between 0.75 and 0.89 and the discriminating power between 0.9274 and 0.9625. Significant difference was observed in the distribution of allele frequencies among the four Chinese populations. According to the results obtained in this study, D19S400 locus is a useful marker for individual indentification, paternity testing and for genetics study.
出处
《华西医科大学学报》
CSCD
1998年第4期418-422,共5页
Journal of West China University of Medical Sciences
关键词
聚合酶链反应
D19S400基因座
遗传多态性
Short tandem repeat
Polymerase chain reaction
D19S400 locus
Genetic polymorphism