Analysis of Y-STR Mutation into Familial Searching
LI Honglei1, ZHANG Xu1, SUN Hui2, WANG Zhanhong1, ZHANG Erwei3, LI Wanshui2, MO Xiaoting2,*
1. Ruzhou Public Security Bureau, Ruzhou 130300, Henan, China; 2. Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China; 3. Zhengzhou University of Light Industry, Zhengzhou 450000, China
Abstract：The new-established ‘Y-STRs familial searching’, built upon the Y-STR test, has already become a powerful tool for criminal detection. However, the Y-STRs mutate frequently during their descending course, resulting in the discrepant Y-STR genotypes to be carried by the consanguineous male relatives of same kin. The more distant the related men are, the higher the chance they will have different Y-STR haplotypes. Therefore, even if there are similar Y-STR genotypes between the on-site evidence and one certain individual screened, the difficulty is still present to judge whether the matched man’s family is really the suspect’s. Here, the analytic strategy and principle are illuminated about the data from familial searching based on a typical case where four mutations of Y-STRs were found in pedigree screening.
李鸿雷, 张旭, 孙辉, 王占洪, 张二伟, 李万水, 莫晓婷. 家系排查中Y-STR突变分析[J]. 刑事技术, 2018, 43(6): 501-504.
LI Honglei, ZHANG Xu, SUN Hui, WANG Zhanhong, ZHANG Erwei, LI Wanshui, MO Xiaoting. Analysis of Y-STR Mutation into Familial Searching. Forensic Science And Technology, 2018, 43(6): 501-504.
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2018, Vol. 43 
