Korobitsina K.V., Kartavtseva I.V.
Zoologicheskiy zhurnal 1992; 71(3): 83-95
Intraspecific and intrapopulation polymorphism of the 13th heterochromatin chromosome in red-tailed libyan jird was studied, using differential staining. Five types of heterochromatin are described. Combinations of these types produce ten variants of the chromosome. In each subspecies its own specific variant is fixed, M.l. caucasicus found to be an exclusion since infra- and interpopulation polymorphism was revealed in this species. Probable routes of the species dispersion are discussed taking into account the pattern of geographic distribution of variants of the 13 chromosome. Hypothesis is suggested maintaining interconnection between contacts of the species with local infections and evolution of heterochromatin structure of its karyotype.
