Cytogenetical Studies on Fishes. VIII : XX-Y Sex Chromosome Mechanism newly found in the Snake Eel, Muraenichthys gymnotus (Anguilliform, Pieces)
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概要
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The chromosome-number of the female snake eel, Muraenichthys gymnotus, is 2n=48, consisting of 2 subtelocentric pairs and 22 acrocentric pairs, while in the male it is 2n=47. In the male cells one large metacentric is always observed. Judging from the multiple sex-chromosome mechanism in the other species, the metacentric element is suggested to be the Y. Thus, the sex-chromosome mechanism in this species is inferred to be the multiple X1X2-Y.
著者
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YOSIDA Tosihide
National Institute of Genetics
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MUROFUSHI Makoto
Mishima Junior College, Nihon University
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