Polymorphism of fifteen short tandem repeat loci in Maonan minority of Guangxi

Abstract To study the genetic polymorphism of 15 short tandem repeat (STR) (D2S1338i D3S1358i D5S818i D7S820, D8S1179, D13S317, D16S539, D18S51, D19S433, D21S11, CSF1PO, TPOX, TH01, vWA, FGA) in Maonan minority of Guangxi province. The allele frequencies and the genotype of 15 STR loci were analyzed in 143 unrelated individuals in Maonan minority of Guangxi by PCR-STR and genescan. There were 130 STR alleles and 390 genotypes in the 15 STR of Maonan minority, with allele frequencies ranging from 0.0035 to 0.5385. The average heterozygosity was 0.7697, the discrimination power was higher than 0.8 except for that of TPOX, the accumulative discrimination power was more than 0.999999999, and the probability of paternity exclusion was more than 0.99999918. The 15 STR loci of Maonan minority in Guangxi possesses the characteristics of high genetic diversity, except for the TPOX locus. They can be employed in minority genetics investigation, individual and paternity test in forensic medicine.