The MspI restriction polymorphism of the serotonin 2A receptor gene (5HT2A)
was typed in populations of the Volga-Ural region (Bashkirs, Chuvashes, Ta
tars, Udmurts, Maris, Mordovians, Komis, and Russians inhabiting the Republ
ic of Bashkortostan). Population-specific patterns of the main polymorphism
indices distribution were established. Specific trends in the changes of g
enotype and allele frequency of the 5HT2A gene depending on the ethnicity o
f the population were revealed.