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Highly conserved linkage homology between birds and turtles: Bird and turtle chromosomes are precise counterparts of each other

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タイトル: Highly conserved linkage homology between birds and turtles: Bird and turtle chromosomes are precise counterparts of each other
著者: Matsuda, Yoichi 著作を一覧する
Nishida-Umehara, Chizuko 著作を一覧する
Tarui, Hiroshi 著作を一覧する
Kuroiwa, Asato 著作を一覧する
Yamada, Kazuhiko 著作を一覧する
Isobe, Taku 著作を一覧する
Ando, Junko 著作を一覧する
Fujiwara, Atushi 著作を一覧する
Hirao, Yukako 著作を一覧する
Nishimura, Osamu 著作を一覧する
Ishijima, Junko 著作を一覧する
Hayashi, Akiko 著作を一覧する
Saito, Toshiyuki 著作を一覧する
Murakami, Takahiro 著作を一覧する
Murakami, Yasunori 著作を一覧する
Kuratani, Shigeru 著作を一覧する
Agata, Kiyokazu 著作を一覧する
キーワード: comparative mapping
sex chromosome
発行日: 2005年 8月
出版者: Springer Netherlands
誌名: Chromosome Research
巻: 13
号: 6
開始ページ: 601
終了ページ: 615
出版社 DOI: 10.1007/s10577-005-0986-5
抄録: The karyotypes of birds, turtles and snakes are characterized by two distinct chromosomal components, macrochromosomes and microchromosomes. This close karyological relationship between birds and reptiles has long been a topic of speculation among cytogeneticists and evolutionary biologists; however, there is scarcely any evidence for orthology at the molecular level. To define the conserved chromosome synteny among humans, chickens and reptiles and the process of genome evolution in the amniotes, we constructed comparative cytogenetic maps of the Chinese soft-shelled turtle (Pelodiscus sinensis) and the Japanese four-striped rat snake (Elaphe quadrivirgata) using cDNA clones of reptile functional genes. Homology between the turtle and chicken chromosomes is highly conserved, with the six largest chromosomes being almost equivalent to each other. On the other hand, homology to chicken chromosomes is lower in the snake than in the turtle. Turtle chromosome 6q and snake chromosome 2p represent conserved synteny with the chicken Z chromosome. These results suggest that the avian and turtle genomes have been well conserved during the evolution of the Arcosauria. The avian and snake sex Z chromosomes were derived from different autosomes in a common ancestor, indicating that the causative genes of sex determination may be different between birds and snakes.
Rights: The original publication is available at
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 松田 洋一


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