[Migration as a factor in the genetic heterogeneity of the population of large cities].

The report deals with the influence of migration on genetic heterogeneity of population of big cities. The study of AB0 blood groups frequency distribution in population of Moscow during the period of 50 years shows that the observed genetic heterogeneity is associated with demographic structure of the groups compared. Besides, the evaluation of genetic identity of Moscow population and that of different Russian regions population is related to the migrants part having come to Moscow from these regions.