Genetic analysis of 39 Y-STR loci in a Han population from Henan province, central China
A total of 39 Y-chromosomal short tandem repeat (Y-STR) loci included in the advanced commercial six-dye multiplex system (AGCU Database Y30 kit) and a custom-designed four-dye multiplex system were investigated in 259 unrelated healthy Chinese males residing in Henan Province, central China. The haplotype diversity (HD) values were 0.99997 and 1.0000 for the six and four fluorescent-multiplex amplification systems, respectively. The discrimination capacity (DC) values were 0.9961 and 1.0000, respectively. When the 39 Y-STR loci were considered, 259 unique haplotypes were obtained in Henan Han individuals with both the haplotype diversity and discrimination capacity being 1.000. The gene diversity (GD) of 39 Y-STR loci in the studied group ranged from 0.3956 (DYS588) to 0.9990 (DYF403S1). Population comparisons between the Henan Han and 24 reference groups were performed. Both multidimensional scaling plots and phylogenetic analysis demonstrated that significant genetic differences existed between Henan Han and reference ethnic minorities of China, particularly the Tibetan, Uighur, and Mongolian populations. Moreover, the results indicated that 39 Y-STRs included in the two fluorescent-multiplex amplification systems are highly polymorphic and informative in the studied populations and can be employed as complementary tools for forensic application and human genetics research.
KeywordsFluorescent-multiplex amplification system Haplotype Genetic polymorphism Forensic genetics Henan Han population
We thank all sample donors for their contribution to this work and all those who helped with sample collection. In addition, we would like to thank all contributors of the YHRD database. We also would like to express our acknowledgment to Senior Research Fellow, PhD, Sharon O’Toole, Department of Histopathology, Trinity College Dublin, Ireland, for improving the English presentation.
This study was supported by Key scientific research projects of Henan Province (13A310849), Key Project of Henan Education Science during the 12th Five-Year Plan (2013-JKGHB-0035), and the National Natural Science Foundation of China (81671873, 81273347).
Compliance with ethical standards
This study was reviewed and approved by the Ethics Committee of Xinxiang Medical University.
Conflict of interest
The authors declare that they have no conflicts of interest.
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