[Genetic polymorphisms of 6 Y-chromosome specific STR loci in the southern Chinese Han population and its application in forensic science].
To study the genetic polymorphisms of six Y-chromosome specific STR loci in the southern Chinese Han population and apply it in forensic science, six Y-STR loci were amplified by multiple PCR and the PCR products were detected by using ABI Prism 377 Sequencer. The haplotype frequencies at 6 Y-STR loci were determined in a total of 204 unrelated males from southern Han population of China. Ninety-three father/son pairs with demonstrated paternity and thirty-eight non-paternity father/son pairs were detected by using our Y-STR system. As a result, the number of alleles for DYS393, DYS19, DYS389 II, DYS390, DYS391 and DYS385 were 5, 6, 8, 6, 4 and 44, respectively. A total of 176 haplotypes at 6 Y-STR loci were found. Two father/son pairs with single Y-STR mutation were observed in the 93 father/son pairs with demonstrated paternity. Among the 38 non-paternity father/son pairs, one case with one Y-STR exclusion of paternity, one case with two Y-STR exclusions and 35 cases with 3 or more Y-STR exclusions were observed. Non-exclusion of paternity at 6 Y-STR loci was found only in one case. This result indicated that the six Y-STR loci were highly polymorphic and are suitable for personal identification and paternity testing.
Deng
Zhi-Hui
ZH
Shenzhen Institute of Transfusion Medicine, Shenzhen 518035, China. zhi-hui_deng@yahoo.com.cn
Wu
Guo-Guang
GG
Zhang
Xuan
X
D044466:Asian People; D002681:China / Q000208:ethnology; D041322:Chromosomes, Human, Y / Q000235:genetics*; D005787:Gene Frequency; D006239:Haplotypes / Q000235:genetics*; D006801:Humans; D008297:Male; D010334:Paternity; D011110:Polymorphism, Genetic; D020080:Tandem Repeat Sequences