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Abstract
In this study, to clear cytogenetic characteristics of 2n = 60 chromosome form of blind mole rats Nannospalax xanthodon superspecies, we carried out conventional staining, Ag-NORs (Nucleolar Organizer Regions) staining and C-banding on the mole rat specimens obtained from 9 localities in Aksaray province, Turkey. Heteromorphic chromosomal pair was determined in Eskil populations. C-heterochromatin regions were found in centromeric region of all bi-armed autosomal pairs whereas C-heterochromatin was localized in pericentromeric areas of some acrocentric autosomes. The sex chromosomes possessed distinct pericentrometric dark C-band. Heteromorphic autosomal pair with deletion/addition of heterochromatin and euchromatin material in short arms was recorded in Eskil populations. The NORs were localized in distal areas of the euchromatic short arms in four pairs of bi-armed autosomes in all the studied populations.