title: [Polymorphism of five X-STR loci in Chinese Achang ethnic group].
abstract: To investigate the genetic polymorphism and applied value in forensic medicine of five short tandem repeats (STRs) loci(DXS7130, DXS7132, DXS7133, DXS6804 and DXS8378) on X-chromosome in Achang ethnic group.
  
  
  
  Allele frequency and genotype distribution of five X-STR loci among 100 unrelated individuals from Achang ethnic group were analyzed by PCR following polyacrylamide gel electrophoresis and silver staining. Hardy-Weinberg equilibrium of females was tested and forensic parameters were calculated.
  
  
  
  All the five STR loci were polymorphic in Achang ethnic group. Chi-square test indicated that genotype distribution of females was in accordance with Hardy-Weinberg equilibrium.
  
  
  
  These results enrich Chinese genetic database and can be applied to individual identification, paternity testing and population genetics.
authors: The Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University, Xi'an 710061, China.
authors: Shan-Zhi
authors: SZ
authors: Gu
authors: Jing-Fang
authors: JF
authors: Zhong
authors: Zhi-Qiang
authors: ZQ
authors: Mu
authors: Sheng-Bin
authors: SB
authors: Li
mesh_terms: D000483:Alleles; D002681:China; D041321:Chromosomes, Human, X / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D018895:Microsatellite Repeats / Q000235:genetics*; D011110:Polymorphism, Genetic