北京地区汉族群体D1S1612和D18S535基因座的遗传多态性

采用扩增片段长度多态性（Amp-FLP）分型技术,调查中国北京地区汉族群体D1S1612、D18S535 基因座的遗传多态性,获得等位基因频率分布。结果显示, D1S1612检出9个等位基因,25种基因型, D18S535检出9个等位基因,27种基因型。两个STR基因座的杂和度（H）分别为0.779、0.887;个人识别率（Dp）分别为0.901、0.927;非父排除率（PE）分别为0.564、0.770;多态信息容量（PIC）分别为0.723、0.796,卡方检验表明两个STR 基因座基因型频率分布符合Hardy-Weinberg平衡 (P>0.01 )。D1S1612和D18S535 基因座均属高杂合度、高识别能力的遗传标记,可用于法庭科学亲子鉴定和个人识别。 Abstract: To investigate the genetic polymorphism of D1S1612 and D18S535 in Han population of Beijing. Amp-FLP method was used. 9 alleles, 25 genotypes were observed for D1S1612 locus; and 9 alleles and 27 genotypes for D18S535 locus. All allele frequencies, heterozygosity (H), discrimination power (Dp), exclusion of paternity probability (PE) and polymorphism information content (PIC) were calculated. The allele distributions of the two loci were conformed to Hardy-Weinberg equilibrium (P>0.01). According to the results obtained in this study, it is suggested that both D1S1612 and D18S535 are useful genetic markers for individual identification and paternity testing in forensic science practice as well for genetic study.     

中国畲族、锡伯族、壮族和藏族Penta E位点的遗传多态性

应用复合PCR扩增技术和荧光毛细管DNA自动电泳分型的方法,使用国产试剂盒,检测Penta E位点在中国畲族、锡伯族、壮族和藏族中的基因频率分布情况。获得了4个民族各约100名无关个体的Penta E位点的等位片段及基因型频率,共发现20个等位片段,其频率分布在0.0048～0.2396之间。各民族的平均杂合度为0.8838,平均个体识别力0.9748,平均非父排除率0.7635,平均多态信息总量0.8950。研究表明Penta E位点属高杂合度、高识别能力的遗传标记,是法庭科学亲子鉴定和个体识别的理想位点。