[Forensic application of the polymorphism of coagulation factor XIIIB].

Gene frequencies of coagulation factor XIIIB polymorphism were determined in a random population sample of east Westphalia (n = 417). Furthermore, mendelian inheritance of alleles was examined in 60 families. Determinations were made after treatment of serum samples with neuraminidase by immunofixation on agarose gels. All six phenotypes were observed in our population sample. The gene frequencies were: FXIIIB1 = 0.71, FXIIIB2 = 0.11, FXIIIB3 = 0.18. The family data confirm the hypothesis of autosomal inheritance of three common alleles and disprove the two-allele model of Kera et al. [5].