Haplotype frequencies of eight Y-chromosome STR loci in Barcelona (North-East Spain)

Haplotype frequencies for eight Y-chromosomal short tandem repeat (STR) loc i were determined in a population sample from Barcelona (NE Spain). After P CR amplification and denaturing PAGE electrophoresis, DYS19, DYS388, DYS389 I/II, DYS390, DYS391, DYS392 and DYS393 loci were typed. Complete eight Y- chromosomal STRs haplotypes could be formed for 223 subjects, among which 1 37 different haplotypes were observed. The most common haplotype was shared by 13% of the sample, while 108 haplotypes were unique. The discrimination capacity was 61.5% and the gene diversity was 0.978. From the forensic poi nt of view the combined polymorphisms provide a high diagnostic efficiency.