AN ESTIMATION OF GENETIC DISTANCES BETWEEN POPULATIONS OF HORSE WITH ISSR-MARKERS
Inthisscientificworkanestimationafterinterbreedingdifferentiationof 128 representatives of 5 populations of horse (Arabic breed, Orlov trotters, Novooleksandrivsky draft breed, Thoroughbred, Przewalskyhorse) with using of two ISSR-systems on the basis of primers (AGС) <sub>6</sub>G and (AСС) <sub>6</sub>G isdone. Novooleksandrivsky draft breed is unique no ughin a genetic relation. Such results of genetic structures comparison of horse breeds and Przewalsky horse testify that poly locus spectrums of ISSR - PCR markers have the expressed specific and pedigree specificity. Applied markers of ISSR-PCR educed the sufficient polymorphism for the study of polymorphism of horse. Determination of phyllogenetic distance is conducted between the breeds of horse. It is set that g the marker systems can be used for determination of genetic distance between breeds and searching of phyllogenetic connections. Using of these markers in the future will allow extending and accumulating information about genetic variation among the breeds of horse.