Dynamics of the marital structure with respect to the ethnicity and birthplace of spouses in a modern urbanized Siberian population: The example of the Tomsk population

To analyze a population's marital structure with respect to the ethnicity a nd birthplace of the spouses and to estimate the indices of endogamy, migra tion, and marriage assortativeness, the records of marriages in Tomsk durin g two periods of time (1970-1972 and 1985-1990) were studied. The parameter s of the population-genetic and demographic structure proved to change duri ng the studied period: the endogamy index and the indices of marriage assor tativeness increased, and the migration index decreased. these data suggest that the genetic structure of the Tomsk urbanized population stabilized wi th time and that the intrapopulation subdivision decreased (a tendency for panmixia).