Kova'lskaya Yu.M. Aniskin V.M., Kartavtseva I.V.
Zoologicheskiy zhurnal 1991; 70(12): 97-103
Caryotypes of Microtus fortis (2n-52) differentially stained by C- and G-techniques, from western Transbaikalia, north-eastern Mongolia and Primorskii territory were studied. It is shown that the G-pattern is identical in all specimens studied. Comparison of the caryotypes studied and stained by the C-technique has revealed significant differences in the number and distribution of heteriochromatine units in animals from different parts of the range. Out of all studied species in the subfamily Microtinae, Microtus fortis manifests the greatest diversity of the geographical variation in the structural heterochromatine including variation in sizes and numbers of the centromeric blocks, in telomere autosome blocks, and the variation by the C-heterochromatine of the sex chromosomes.
