author(s)
Hatice Mutlu Eyison, Erkut Kıvanç

abstract
In this study, the karyotype analysis of four Apodemusrnflavicollis specimens caught alive and delivered to the laboratory and alsornfour specimens born in the laboratory has been performed using the technique ofrn“Colchicine hypotonic citrate”. The diploid chromosome number (2n), the basicrnchromosome number (NF) and the autosomal chromosome number (NFa) have beenrndetermined by examining about 30 metaphase cells of each specimen. It has beenrndetermined that the diploid chromosome number is 2n=48, the basic chromosomernnumber is NF=48 and the autosomal chromosome number is NFa=46. It has beenrnfound that all autosomal chromosomes are acrocentric and they are in differentrnsizes; while the X chromosome is in a big acrocentric structure, the Yrnchromosome is not. In the overwintered land specimens and the laboratoryrnspecimens, it has been determined that there is not any B chromosome and therernare not any differences between their karyotypes.