Dynamics of the marital structure with respect to the nationality and birthplace of spouses in a modern urbanized Siberian population (as exemplified by Tomsk)

To analyze a population's marital structure with respect to the ethnicity and birthplace of the spouses and to estimate the indices of endogamy, migration, and marriage assortativeness, the records of marriages in Tomsk during two periods of time (1970-1972 and 1985-1990) were studied. The parameters of the population-genetic and demographic structure proved to change during the studied period: the endogamy index and the indices of marriage assortativeness increased, and the migration index decreased. These data suggest that the genetic structure of the Tomsk urbanized population stabilized with time and that the intrapopulation subdivision decreased (a tendency for panmixia).