title: [Distributions of haplotypes for three Y-STR loci in a Tibetan ethnic group of Chinese population by using Y-STR multiplexes].
abstract: OBJECTIVE
  One multiplex genotyping system was developed in using silver staining with allelic ladders for three Y-chromosome STR markers (DYS434, DYS443, and DYS456), with a view towards the application of rapid and simple genotyping assay methods for DNA profiling. The distributions of haplotypes for three Y-STR loci(DYS434, DYS443, and DYS456) was investigated in a Tibetan ethnic group of Chinese population.
  
  
  METHODS
  Allele and haplotype frequencies at these Y-STRs loci(DYS434, DYS443, and DYS456) were analysed by PCR amplification using Y-STR multiplexes, followed by horizontal non-denaturing polyacrylamide gelelec-trophoresis in 101 unrelated males of Tibetan ethnic group in Lasa of China.
  
  
  RESULTS
  A total of 31 different haplotypes were found, 16 of them being unique. The haplotype diversity value (which is the same as the discrimination index) calculated from all three loci combined was 0.9481, which is informative.
  
  
  CONCLUSIONS
  The Y-STR multiplexes provide useful information for forensic analysis and paternity tests and can also be of great benefit for providing information not normally available from autosomal DNA systems.
authors.affiliation: West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China.
authors.forename: Bin-wu
authors.initials: BW
authors.lastname: Ying
authors.forename: Yi-ping
authors.initials: YP
authors.lastname: Hou
authors.forename: Jian-pin
authors.initials: JP
authors.lastname: Tang
mesh_terms: D000483:Alleles; D002681:China / Q000208:ethnology; D041322:Chromosomes, Human, Y / Q000235:genetics*; D005260:Female; D005554:Forensic Medicine; D005787:Gene Frequency; D005819:Genetic Markers; D005828:Genetics, Population; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D008297:Male; D018895:Microsatellite Repeats / Q000235:genetics*; D010334:Paternity; D016133:Polymerase Chain Reaction; D017422:Sequence Analysis, DNA; D016622:Silver Staining
chemical_list: D005819:Genetic Markers