THE VARIABILITY OF SATELLITE DNA-II AND D NA-IV IN CATTLE AND SOME REPRESENTATIVES OF SUBFAMILY BOVINAE AND THEIR HYBRIDS

Polymorphism of satellite DNA II and IV was studied in Bos taunts by m eans of Southern blotting and dot hybridization. Of primary interest i s the absence of restriction fragment length polymorphism at the indiv idual and interbreed levels. Differences in the content of satellite I I in the genome are demonstrated for animals of the Kholmogorskaya and Yakutian breeds. The specific features of satellite IV organization i n the bison, banteng and yak are revealed, allowing the use of the sat ellite as a specific genetic marker, Superposition of parental organiz ational types of this class of repeats is detected for the interspecie s hybrids yak x cattle, banteng x cattle, and bison x cattle. At the s ame time, several cases of deviation from classic inheritance of such parental types in the interspecies hybrids were found.