[Detecting the haplotype of three Y-STR loci by fluorescent multiplex amplification].

Objective: To establish a fluorescent multiplex PCR system for typing Y-STR loci Y-GATA-A7.1, DYS456 and DYS443, and investigate their haplotype frequencies in Chinese Han population.

Methods: 203 unrelated males of Han population living in Zhengzhou were typed by fluorescent multiplex amplification system and ABI 3100 genetic analyzer.

Results: In Zhengzhou Han population, 5,6 and 6 different alleles were observed for Y-GATA-A7.1, DYS456 and DYS443 loci, and their gene diversity (GD) were 0.669 2, 0.583 9 and 0.705 3 respectively. A total of 44 different haplotypes formed by these three loci was identified and the haplotype diversity (HD) reached 0.952 3.

Conclusion: The fluorescent multiplex system for these three Y-STR loci will be very powerful for forensic individual identification and paternity testing in Chinese Han population.