D6S1043和D12S391基因座在亲权鉴定中的应用

目的研究D6S1043和D12S391基因座在亲权关系鉴定案件中的应用价值。方法应用荧光标记复合扩增系统对日常检案中所收集的192名汉族无关个体血样DNA进行PCR扩增,用ABI3100-Avant遗传分析仪对扩增产物进行毛细管电泳,用GeneMapperv3.2软件进行基因分型,统计分析D6S1043和D12S391基因座的多态信息。结果在D6S1043和D12S391基因座分别发现12个等位基因,它们在中国汉族人群中的个体识别能力分别为0.9656和0.9510,二联体非父排除率分别为0.573和0.510,三联体非父排除率分别为0.731和0.679。结论D6S1043和D12S391基因座具有高度多态性,在亲权鉴定中具有重要应用价值。

Application of D6S1043 and D12S391 loci in forensic paternity testing

Objective The aim was to investigate the polymorphisms of D6S1043 and D12S391 loci among Han population and evaluate their values in paternity testing. Methods By using fluorescence dye-labeled primers and capillary electrophoresis,the allele frequencies of the two STR loci among 192 unrelated individuals were investigated. Results Twelve alleles were observed in both D6S1043 and D12S391 loci. The ranges of allele frequencies were from 0.002 6 to 0.171 9 and from 0.002 6 to 0.229 2,respectively. The discrimination power of D6S1043 and D12S391 were 0.965 6 and 0.951 0. The Average exclusion probability in paternity testing for duos were 0.573 and 0.510. The Average exclusion probability in paternity testing for trios were 0.731 and 0.679,respectively. The genotypes frequencies met Hardy-Weinberg equilibrium expectation. Conclusion The results show that D6S1043 and D12S391 have high values in forensic paternity testing.