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  • Küçük Resim
    Öğe
    Comparison of the chromosome banding patterns in Dryomys lanigerand D. nitedula from Turkey
    (2016) Arslan, Atilla; Kankılıç, Teoman; Yorulmaz, Tarkan; Kankılıç, Tolga; Zıma, Jan
    The karyotypes of Dryomys laniger and D. nitedula from Turkey were studied using C-banding and AgNOR staining. The standard karyotypes found in both species were fairly similar to previously published data (2n = 46, NF = 92 in D. laniger; 2n = 48, NF = 96 in D. nitedula). The C-banding pattern revealed a relatively small amount of heterochromatin in both karyotypes and C-heterochromatin was concentrated at centromeric areas of most autosomes and the X chromosome. Heterochromatin changes have apparently not been responsible for karyotypic divergences between the studied species. The AgNORs were recorded in the pericentromeric region of two autosome pairs in the complement of D. laniger, and at a single autosome pair of D. nitedula. The complement of D. laniger could be derived from that of D. nitedula after a tandem fusion of two autosomal pairs, and the assumed rearrangement also included the NOR region.
  • Küçük Resim
    Öğe
    Variations in C-heterochromatin and AgNOR distribution in the common vole (Microtus arvalis sensu lato) (mammalia: Rodentia)
    (Institut za biološka istra?ivanja Siniša Stankovi?, 2013) Yorulmaz, Tarkan; Zima, Jan; Arslan, Atilla; Kankılıç, Tolga
    The variation pattern of the C-heterochromatin and nucleolar organizer region (NOR) distribution, both between and within two cytotypes of M. arvalis with 46 chromosomes, are described. The positive C-bands were observed on six or seven small bi-armed autosomal pairs and in two, three or four acrocentric autosomal pairs. Only a small dark C-band was observed in the acrocentric homologue from a large heteromorphic autosomal pair in the complement of specimens belonging to the obscurus cytotype. The nudeolar organizer region was localized in the secondary constrictions in three autosomal pair in the specimens of the obscurus cytotype. These results may contribute to the knowledge of cytogenetic differentiation between the cytotypes and investigation of their systematic status.