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KMID : 0613820020120050605
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Journal of Life Science
2002 Volume.12 No. 5 p.605 ~ p.609
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Chromosome Analysis by GTG, High-Resolution, and NOR-banding Techniques in the Dog (Canis familaris)
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Kim Jong-Bong
Yoon In-Sock
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Abstract
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None of the numerous published canine idiograms and karyotypes has yet been generally accepted as a standard one because the dog has 76 acrocentric autosomes of similar size and shape. To establish canine banded karyotype from the 22nd chromosome to the 37th chromosome, we analyzed canine chromosomes by GTG, high resolution, and NOR-banding techniques. The GTG and high resolution banding patterns of canine chromosomes corresponded to other reports described previously except for a few chromosomes. While other researchers observed 12 bands, we observed 7 bands in the banding patterns of chromosome 24, 34 and 37. On the other hand, the banding patterns by NOR-banding technique showed that three pairs of autosomes have nucleolus organizer regions at the terminal ends of their long arm, and the Y chromosome has it in its short arm terminal. However, the X chromosome has no nucleolus organizer like other mammals.
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KEYWORD
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canine karyotype, GTG banding, NOR-banding
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