【摘要】 目的 :研究人类短串联重复序列D2 1S14 0 9在河南汉族人群中的遗传多态性 ,并探讨该基因座在法医学的应用可能性。方法 :采集河南无血缘关系汉族个体血样 ,应用Chelex法提取DNA ,聚合酶链式反应扩增 ,非变性聚丙烯酰胺凝胶电泳分型。结果 :得到D2 1S14 0 9在河南汉族群体中的基因频率 ,有 6个等位基因 ,12个基因型 ,杂合度为 0 6 5 ,个体识别库为 0 81,非父排除率为 0 37。结论 :该基因座多态性较好 ,分布符合Hardy Weinberg平衡 ,可以用于个体识别和亲权鉴定更多还原

【Abstract】 Objective: We researched the genetic polymorphisms of D21S1409 in Henan population and its using in forensic science. Methods: Collecting not relative persons in Henan population and getting the DNA with Chelex.Using polymerase chain reaction and nondenaturing polyacrylamide gel electrophoresis silver staining to type the persons. Results: A total of 6 alleles and 12 genotypes was found in Henan population,its heterozygosity is high and the locus can be used in forensic genetics. Conclusion: We get the frequency of the locus D21S1409 in Henan population.The results of amniotic fluid,villus,blood stain mean D21S1409 is a good locus for forensic.更多还原