Genetic polymorphisms of 10 X-chromosome STR loci in Chinese Daur ethnic minority group.

The population genetic data of 10 X-chromosomal short tandem repeats (STR) loci DXS101, DXS7130, DXS6804, DXS7133, DXS7132, DXS6799, DXS8378, DXS6789, DXS7423 and HPRTB were analyzed in samples of unrelated individuals from Chinese Daur population. Average heterozygosity of above 10 STR loci was 0.6489 and the DXS6789 was the most polymorphic. The exact test for female data showed no significant deviation from the Hardy-Weinberg equilibrium (P>0.05). Allele frequencies between male and female samples were not significantly different in all examined loci. Further, the allelic frequencies of Daur ethnic population were compared with those of other populations, and most of loci were significantly different from each other (P=0.05). Presented study is potential extension to a battery of autosomal systems in forensic application in the region, and enriches Chinese ethnical genetic informational resources.