title: [Seven Y-specific loci haplotypes and their usefulness in forensic casework].
abstract: OBJECTIVE
  To study genetic polymorphism of 7 Y-specific short tandem repeats (STR) and assess their usefulness in forensic casework.
  
  
  METHODS
  7 Y-STR have been amplified in two multiplex reactions, (Multiplex I:DYS391, GATA-A4, GATA-A10 and GATA-H4. Multiplex II:DYS439,DYS437 and DYS434). PCR products were separated by polyacrylamide gels electrophoresis followed by silver stain.
  
  
  RESULTS
  When 372 unrelated individuals from the Han population in Guangdong were detected by those system, DYS391, GATA-A4, GATA-A10, GATA-H4,DYS439,DYS437 and DYS434 showed 5,7,6,5,6,4,4 alleles, respectively. A total of 254 different haplotypes were identified, of which 201 (79.13%) were found in single individuals. The overall haplotypes diversity reached 0.9960.
  
  
  CONCLUSIONS
  The 7 Y-STR loci are highly genetic polymorphism and they will be very powerful for establishing Y-STR database, understanding human origin, paternity testing and personal identification.
authors.affiliation: Faulty of Forensic Medicine, Zhong Shan Medical College, Zhong Shan University, Guangzhou 510089, China.
authors.forename: Qiu-ling
authors.initials: QL
authors.lastname: Liu
authors.forename: De-jian
authors.initials: DJ
authors.lastname: Lu
authors.forename: Li-xian
authors.initials: LX
authors.lastname: Chen
mesh_terms: D000483:Alleles; D044466:Asian People; D041322:Chromosomes, Human, Y / Q000235:genetics*; 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; D011110:Polymorphism, Genetic; D017422:Sequence Analysis, DNA
chemical_list: D005819:Genetic Markers