Problems of Forensic Sciences 2007 Vol. 71 (LXXI) 265-279
ON THE SUBTLE SOUTHERN POLISH POPULATION SUBDIVISION
Paulina WOLAŃSKA-NOWAK
Institute of Forensic Research, Krakow, Poland
Streszczenie
Possible genetic differentiation between a suspect’s and the true perpetrator’s population may influence the value of DNA evidence. Hence the extent of this possible genetic differentiation of some geographically isolated populations of highlanders from the southern Polish population was the subject of the presented study. Ten microsatellite loci were used to assess the effects of population subdivision on the probability of a chance match between two DNA profiles. Genotype data for the ten analysed loci considered in this study indicated that the total population is in close agreement with the Hardy-Weinberg equilibrium. The mean value of the coancestry coefficient FST, which is a measure of population subdivision, is 0.0039, which indicates a very subtle differentiation of this population. This value of the FST parameter has a very limited influence on the frequency of common DNA profiles, but is more marked in the case of rare DNA profiles. However, even in these cases it is not significant for forensic practise, due to the very high discriminatory power of the panel of SGM Plus loci.
Słowa kluczowe
DNA evidence; South Poland highlanders; Population subdivision.