Genetic polymorphism of six short tandem repeat loci on the X chromosome in a Han race population in China

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Abstract

Objective: To investigate the alleles and genotype frequencies of 6 short tandem repeat (STR) loci DXS7130, DXS1214, DXS6799, DXS6804, DXS7424 and DXS7133 on the X chromosome in Chinese Han individuals living in Shaanxi province of Northwest China. Methods: The 6 X-chromosomal STR loci were typed by PCR, denatured polyacylamide gel electrophoresis and silver stain. Results: Among females from Xi' an Han population, the numbers of alleles in the 5 loci (DXS7130, DXS6799, DXS6804, DXS7424 and DXS7133) were detected to be 9, 6, 6, 7, and 7 respectively; the numbers of genotypes were 21, 14, 15, 17 and 12 respectively; and the number of alleles in the DXS1214 was 8. Exact tests demonstrated that genotype frequencies of females had no departure from Hardy-Weinberg equilibrium. Conclusion: The six loci of X-chromosomal STRs are appropriate for individual identification, paternity test involving in female child and for study in related disease.

Original languageEnglish
Pages (from-to)92-94
Number of pages3
JournalChinese Journal of Medical Genetics
Volume23
Issue number1
StatePublished - 10 Feb 2006

Keywords

  • Genetic polymorphism
  • Short tandem repeat
  • X chromosome

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