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タイトルヨミ
ホンポウサン イモリ ノ カクガタ ト コウセイテキ イシツ センショクシツ ノ キョクザイ パターン ニ ツイテ
日本語以外のタイトル
Karyotypes and Localization of Constitutive Heterochromatin on the Mitotic and Meiotic Chromosomes in Cynops Pyrrhogaster
ファイル
言語
英語
著者
瀬戸 武司
内容記述(抄録等)
Karyotypes of male and female Japanese newts, Cynops pyrrhogaster, were studied by the preparation of conventional Giemsa stain and by C-staining technique. Twelve pairs of somatic chromosomes consisted of eight metacentric and four submetacentric homologues. Both male and female karyotypes have identical morphology and no manifestation of heteromorphism of chromosomes defined as a sex-specific pair. Meiotic chromosomes were also examined in male individuals together with their gut tracts. All bivalents at prometaphase of first meiotic division indicated the interstitial chiasmata which were terminalized on all chromosome arms. No end-to-end paired bivalent was seen.
C-banding appeared most intense in the pericentric region of either both chromosome arms or on a single arm of submetacentric chromosomes. Centric heterochromatin was faintly detected in a few chromosomes. The banding pattern of mitotic and meiotic chromosomes of C. pyrrhogaster revealed the dissimilarity of localization of constitutive heterochromatin with related European Triturus, whose karyotypes were quite similar each other.
掲載誌名
島根大学教育学部紀要. 自然科学
14
開始ページ
5
終了ページ
11
ISSN
05869943
発行日
1980-12-25
NCID
AN00107941
出版者
島根大学教育学部
出版者別表記
The Faculty of Education Shimane University
資料タイプ
紀要論文
部局
教育学部
他の一覧