[Y-STR Poland--a database for evaluation of evidence value in forensic genetics]. / Y-STR Polska--baza danych do oceny wartosci dowodowej w genetyce sadowej.

The "Y-STR Poland" is a multicenter project, the aim of which is the construction of a widely available database of Y chromosome haplotypes determined in the Polish population in a range of sixteen loci in AmpFISTR Y-filer system. The database will be regularly updated and it will be used in assessment of evidence value in forensic genetics. The starting base "Y-STR Poland" contains 1600 Y-STR haplotypes and encompasses data collected in Lodz (two independent centers), Warsaw and Szczecin regions. The present report contains as an attachment the data in an Excel-type file, which serves as a tool in frequency determination of a given Y haplotype in the Polish population. The file will be updated on a regular basis along with updating the database, and will be freely available from www.genetyka-sadowa.pl.

[Population genetics of 17 Y chromosome STR loci in a diverse ethnically groups of Polish citizens]. / Genetyka populacyjna 17 loci Y-STR w zróznicowanych etnicznie grupach obywateli Polskich.

INTRODUCTION: The Y-chromosome has become a powerful tool in identification and characterization of male DNA in forensic analysis. If Y-STRs are used in forensic analysis it is important to establish a meaning of a match (how frequent a particular haplotype has been observed in a population). In literature higher haplotype frequency values were observed in samples from small and isolated populations such as Gypsies. Till now the lack is given on of the genetic differentiation Gypsies resident the territory of Poland and comparative research with a Polish population. This data are indispensable for the correct estimation of the power of the evidence in judicial expertise. MATERIAL AND METHODS: In this study, we reported basic forensic parameters for a 17 Y-STR from the set AmpFISTR Yfiler PCR Amplification Kit for the Gypsy population from the area of Poland and for the Polish population, and also the data were compared to other population samples from India and Europe. RESULTS: A total of 150 unrelated males from Gypsy population produced 78 different haplotypes of which 50 were unique. In population sample of 210 autochthonous Poles 195 different haplotypes were observed of which 185 were found in single individuals. The overall haplotype lower in Gypsy population but the haplotype sharing within population was higher. Both population groups can be distinguished based on AMOVA estimates. Thus a database of multi-locus haplotypes included various ethnic populations from Poland territory is required to provide a statistical estimate of the significance of a match.