Seven Y-specific loci haplotypes and their usefulness in forensic casework / 法医学杂志

ABSTRACT

OBJECTIVE@#To study genetic polymorphism of 7 Y-specific short tandem repeats (STR) and assess their usefulness in forensic casework.@*METHODS@#7 Y-STR have been amplified in two multiplex reactions, (Multiplex IDYS391, GATA-A4, GATA-A10 and GATA-H4. Multiplex IIDYS439,DYS437 and DYS434). PCR products were separated by polyacrylamide gels electrophoresis followed by silver stain.@*RESULTS@#When 372 unrelated individuals from the Han population in Guangdong were detected by those system, DYS391, GATA-A4, GATA-A10, GATA-H4,DYS439,DYS437 and DYS434 showed 5,7,6,5,6,4,4 alleles, respectively. A total of 254 different haplotypes were identified, of which 201 (79.13%) were found in single individuals. The overall haplotypes diversity reached 0.9960.@*CONCLUSION@#The 7 Y-STR loci are highly genetic polymorphism and they will be very powerful for establishing Y-STR database, understanding human origin, paternity testing and personal identification.