Comprehensive analyses for genetic diversities of 19 autosomal STRs in Chinese Kazak group and its phylogenetic relationships with other continental populations  

作　　者：Yijie Wang Xiaoye Jin Wenqing Zhang Wei Cui Tingting Kong Chong Chen Yuxin Guo Haotian Meng Bofeng Zhu 

机构地区：[1]Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research,College of Stomatology,Xi’an Jiaotong University,Xi’an,China [2]Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases,College of Stomatology,Xi’an Jiaotong University,Xi’an,China [3]College of Forensic Medicine,Xi’an Jiaotong University Health Science Center,Xi’an,China

出　　处：《Forensic Sciences Research》2022年第2期163-171,共9页法庭科学研究（英文）

摘　　要：Short tandem repeats(STRs)play an essential role in forensic genetics due to their high degree of polymorphisms,wide distributions and easy detection method.In this study,allelic frequencies and forensic statistical parameters of the 19 autosomal STR loci in a Kazak ethnic group were calculated,and its genetic relationships with reference populations were assessed in order to understand population structure better and enrich population genetic data for forensic practice in Chinese Kazak ethnic group.There were 226 identified alleles with the corresponding allelic frequencies ranging from 0.0008 to 0.5295 in the 628 unrelated healthy Kazak individuals in Xinjiang Uygur Autonomous Region.All autosomal STRs were conformed to the Hardy-Weinberg equilibrium after Bonferroni’s correction.The cumulative power of discrimination and the combined probability of exclusion of all the 19 autosomal STRs were 0.999999999999999999999997162 and 0.999999994484,respectively.Furthermore,the DA distances and Fixation index values of pairwise populations,principal component analysis,multidimensional scaling analysis,phylogenetic tree analysis and structure analysis were conducted to probe the genetic relationships between the Kazak group and other reference populations.The population genetic results showed that these 19 autosomal STR loci were characterised by high genetic diversities in the Kazak group.Furthermore,the studied Kazak group had close genetic relationships with the Uyghur group and the Uzbek group.The present results may facilitate understanding the genetic background of the Chinese Xinjiang Kazak group.

关 键 词：Forensic sciences forensic genetics Kazak ethnic group autosomal STRs population genetics interpopulation differentiation phylogenetic reconstruction 

分 类 号：D919[医药卫生—法医学]