Liapunova E.A., Kartavtseva I.V.
Zoologicheskiy zhurnal 1976; 55(9): 1414-1418
The intrapopulation chromosome polymorphism occurs in less than 4% of mammals species. Abnormal karyotypes are extremely rare. Among 1,700 speciments of rodents, 2 mutant forms were found: for Citellus erythrogenys and Mesocricetus raddei.
