リュウキュウジャコウネズミSuncus murinus riukinanusの性染色体変異〔英文〕
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概要
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Chromosomes of the Ryukyu house shrew Suncus murinus riukiuanus, were studied in 4 laboratory-bred specimens. While the autosomal constitution was almost identical with that of the Ryukyu house shrew so far reported, the sex chromosomes remarkably differed in size and morphology from those of reported cases. Three different types of the X chromosomes were distinguished: (1) a metacentric one, (2) a submetacentric one smaller than the first type, and (3) a metacentric one which was equal in size to that of the second type. The Y was represented by a medium-sized metacentric element. C-banding revealed that the amount and distribution of constitutive hetero-chromatin (C-heterochromatin) in the sex chromosomes were different from those hitherto reported. The possible participation of C-heterochromatin in the sex chromosome variation in Suncus murinus is discussed.
著者
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小原 良孝
弘前大 農生
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Obara Yoshitaka
Department Of Biofunctional Science Faculty Of Agriculture And Life Science Hirosaki University
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小原 良孝
弘前大・農生
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小原 良孝
Department of Biology, Faculty of Science, Hirosaki University
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Obara Yoshitaka
Department Of Biology Faculty Of Science Hirosaki University
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MIYAI Takeshi
Deparment of Biology, Faculty of Science, Hirosaki University
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Obata Yoshitaka
Department Of Biology Faculty Of Science Hirosaki University
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OBARA Yoshitaka
Deparment of Biology, Faculty of Science, Hirosaki University
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宮井 健
Deparment of Biology, Faculty of Science, Hirosaki University
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