Genetic polymorphism of 8 STR loci on short arm of chromosome 3 / 中华医学遗传学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To get the genotype and allele frequency distributions of 8 short tandem repeat (STR) loci on chromosome 3p (D3S1297, D3S1489, D3S1266, D3S1568, D3S1289, D3S1300, D3S1285 and D3S3681) in Chinese Han population in Hunan area.</p><p><b>METHODS</b>Blood samples were collected from the random Han individuals in Hunan and the whole genomic DNA was extracted. STR loci were amplified by multiplex-PCR technique and genotyped by ABI 377 sequencer.</p><p><b>RESULTS</b>Ninety-one alleles were detected, with frequencies ranging from 0.002 to 0.431, and these alleles constituted 312 genotypes. All the 8 loci met Hardy-Weinberg equilibrium. The statistical analysis of 8 STR loci showed the heterozygosity (H) >or= 0.729, the discrimination power (DP) >or= 0.725, the probabilities of paternity exclusion (PPE) >or= 0.596, and the polymorphic information content (PIC >or= 0.682). The result indicated that there was a significant difference between Han ethnic group and the white and the black.</p><p><b>CONCLUSION</b>These results could serve as valuable data to enrich the Chinese genetic database and play an important role in Chinese population genetic and forensic medical application.</p>