Gm and Km(Inv) frequencies in two Roumanian populations.

Serum samples from 170 unrelated individuals from the Suceava District of Roumania and from 199 unrelated individuals from Bucharest, Roumania were tested fro Gm(1,2,3,5,6,13,14,17,21) and Km(1)[Inv(1)]. Selected samples were also tested for Gm(15) and Gm(16). The frequencies of the three common Caucasoid haplotypes, Gm3,5,13,14, Gm1,17,21, and Gm1,2,17,21 in these two populations were found to be similar to those in neighboring Slavic states and Hungary. Racial admixture was evidenced by the presence of the Gm1,13,15,16,17 and Gm1,3,5,13,14 haplotypes, which are primarily Mongoloid, and the Gm1,5,13,14,17 haplotype which is primarily Negroid. Comparisons of these data with those from earlier studies of populations from Central Europe indicate that the frequency of the Gm3,5,13,14 haplotype within this region is high and essentially uniform. Published data for several blood group systems also indicate essentially uniform distributions of frequencies in this region. It is suggested that this region may be the center of a cline that radiates from it.