Analysis of the genetic structure of the breeding nucleus of the Russian population of thoroughbred horses by the extension locus molecular DNA typing

Results of the first in Russia survey of the gene pool of the breeding nucl eus of the Russian population of thoroughbred horses by means of PCR analys is of the E (Extension) locus MC1R gene mutations are presented. The data o n the structure of breeding populations from the leading stud farms Voskhod and Oros with regard to color phenotypes as well as genotype and allele fr equencies are presented. The population structure parameters are discussed with respect to possible specific features of microevolution processes.