[Polymorphism of biochemical markers in European bison (bison bonasus)].

The data on 16 polymorphic systems (22 loci) of blood biochemical markers were studied in different breeding lines of European bison: Lowland, Lowland-Caucasian, and Mountain lines. Polymorphism was revealed in three loci: Pgm, Idh, and Tf. The average heterozygosity was 3.95%. Statistically significant deviation from the Hardy-Weinberg equilibrium towards an excess of heterozygotes was revealed in the Pgm-2 locus. This suggests certain processes that prevent the decrease of population genetical diversity. The estimations obtained of the genetic distances between European bison lines demonstrated the close relationship among them.