| Title: | Highly conserved linkage homology between birds and turtles: Bird and turtle chromosomes are precise counterparts of each other |
| Authors: | Matsuda, Yoichi Browse this author |
| Nishida-Umehara, Chizuko Browse this author →KAKEN DB |
| Tarui, Hiroshi Browse this author |
| Kuroiwa, Asato Browse this author |
| Yamada, Kazuhiko Browse this author |
| Isobe, Taku Browse this author |
| Ando, Junko Browse this author |
| Fujiwara, Atushi Browse this author |
| Hirao, Yukako Browse this author |
| Nishimura, Osamu Browse this author |
| Ishijima, Junko Browse this author |
| Hayashi, Akiko Browse this author |
| Saito, Toshiyuki Browse this author |
| Murakami, Takahiro Browse this author |
| Murakami, Yasunori Browse this author |
| Kuratani, Shigeru Browse this author |
| Agata, Kiyokazu Browse this author |
| Keywords: | comparative mapping |
| evolution |
| linkage |
| sex chromosome |
| snake |
| turtle |
| Z-chromosome |
| Issue Date: | Aug-2005 |
| Publisher: | Springer Netherlands |
| Journal Title: | Chromosome Research |
| Volume: | 13 |
| Issue: | 6 |
| Start Page: | 601 |
| End Page: | 615 |
| Publisher DOI: | 10.1007/s10577-005-0986-5 |
| PMID: | 16170625 |
| Abstract: | 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 www.springerlink.com |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/30315 |
| Appears in Collections: | 創成研究機構 (Creative Research Institution) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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