C- and NOR stained karyotypes of mole rat, Nannospalax xanthodon (2n 54) from Kırıkkale, Turkey
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Tarih
2011
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Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalışmada, Kırıkkale’deki Nannospalax xanthodon üsttürüne ait kör farelerin 2n 54 kromozomal formu araştırıldı. Kör fare örnekleri üzerine standart kromozom boyama, Ag-NOR (Nükleolar Organizatör Bölge) boyama ve C-bantlama analizi uygulandı. Karyotip üç çift metasentrik (no. 1-3), üç çift submetasentrik (no. 4-6), üç çift subtelosentrik (no. 7-9) ve onyedi çift akrosentrik (no. 10-26) kromozom içerir (NFa 70). C-heterokromatin bölgeler bazı iki kollu otozomal çiftlerin sentromerik, perisentromerik ve kısa kollarında bulundu ve C-heterokromatin birkaç akrosentrik kromozomun perisentromerik bölgesinde lokalize olmuştu. X kromozom sentromerik bir C-pozitif banda sahiptir ve Y kromozomunun tek tip ve C-negatif boyandığı ortaya çıktı. NOR’lar çalışılan bütün örneklerde dört çift (no. 4, 5, 8, 9) iki kollu otozomların kısa kollarının heterokromatin bölgelerinde lokalize olmuştur.
In the present study, the 2n 54 chromosomal race of blind mole rats, Nannospalax xanthodon superspecies, from Kırıkkale Province in Turkey was investigated. Conventional chromosome staining, Ag-NOR (Nucleolus Organizer Region) staining, and C-banding analysis were carried out on specimens of mole rats. The karyotype including 3 metacentric pairs (nos. 1-3), 3 submetacentric pairs (nos. 4-6), 3 subtelocentric pairs (nos. 7-9), and 17 acrocentric pairs (nos. 10-26) of autosomes (NFa 70). C-heterochromatin regions were found in the centromeric and pericentromeric region and the short arms of some bi-armed autosomal pairs, and C-heterochromatin was localized in pericentromeric areas of a few acrocentric autosomes. The X chromosome has a centromeric C-positive band and the Y chromosome appeared to be uniformly and C-negatively stained. In all of the specimens studied the NORs were localized in distal heterochromatin areas of the short arms of 4 pairs (nos. 4, 5, 8, 9) of biarmed autosomes.
In the present study, the 2n 54 chromosomal race of blind mole rats, Nannospalax xanthodon superspecies, from Kırıkkale Province in Turkey was investigated. Conventional chromosome staining, Ag-NOR (Nucleolus Organizer Region) staining, and C-banding analysis were carried out on specimens of mole rats. The karyotype including 3 metacentric pairs (nos. 1-3), 3 submetacentric pairs (nos. 4-6), 3 subtelocentric pairs (nos. 7-9), and 17 acrocentric pairs (nos. 10-26) of autosomes (NFa 70). C-heterochromatin regions were found in the centromeric and pericentromeric region and the short arms of some bi-armed autosomal pairs, and C-heterochromatin was localized in pericentromeric areas of a few acrocentric autosomes. The X chromosome has a centromeric C-positive band and the Y chromosome appeared to be uniformly and C-negatively stained. In all of the specimens studied the NORs were localized in distal heterochromatin areas of the short arms of 4 pairs (nos. 4, 5, 8, 9) of biarmed autosomes.
Açıklama
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Kaynak
Turkish Journal of Biology
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Scopus Q Değeri
Cilt
35
Sayı
6
