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[Prevalences of hereditary diseases in various populations in Russia].

The geographic distribution of hereditary diseases (HDs) in different populations and ethnic groups of Russia has been studied. The main patterns of the formation of the prevalence and spectrum of HDs in five ethnic groups (Russians from six regions, Mari, Chuvashes, Udmurts, and Adygeans) from a total of ten regions of Russia have been analyzed. Analysis of correlations suggests that genetic drift is the main factor of the genetic differentiation of populations with respect to the prevalence of HDs. Accumulation of HDs in individual populations and ethnic groups has been analyzed. Hereditary diseases characterized by locally high prevalence rates in individual populations or ethnic groups have been detected. The main patterns of the accumulation of individual diseases and differences between populations and ethnic groups in this respect have been studied with the use of principal component analysis, which describes these patterns more graphically. It has been demonstrated that the genes of HDs are a promising tool for characterizing ethnogenetic processes in populations.