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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Agriculture / Faculty of Agriculture >
Peer-reviewed Journal Articles, etc >
Sex chromosome evolution in moths and butterflies
| Title: | Sex chromosome evolution in moths and butterflies |
| Authors: | Sahara, Ken Browse this author →KAKEN DB | | Yoshido, Atsuo Browse this author | | Traut, Walther Browse this author |
| Keywords: | BAC-FISH | | conserved synteny | | holokinetic chromosomes | | sex determination | | W chromosome | | Z chromosome |
| Issue Date: | Jan-2012 |
| Publisher: | Springer Netherlands |
| Journal Title: | Chromosome Research |
| Volume: | 20 |
| Issue: | 1 |
| Start Page: | 83 |
| End Page: | 94 |
| Publisher DOI: | 10.1007/s10577-011-9262-z |
| PMID: | 22187366 |
| Abstract: | Lepidoptera, i.e. moths and butterflies, have a female heterogametic sex chromosome system, with most females having a WZ constitution while males are ZZ. Besides this predominant WZ/ZZ system, Z/ZZ, WZ1Z2/Z1Z1Z2Z2 and W1W2Z/ZZ systems also occur. Sex is determined by an unknown W-linked gene or genes in Bombyx mori, but by dosage-dependent and equally unknown Z-linked genes in all Z/ZZ species. The female-heterogametic sex chromosome system has been conserved for at least 180 milliion years in the phylogenetic branch that combines Lepidoptera and Trichoptera. The W chromosome, which is present in most lepidopteran species, was incorporated into the system much later, about 90-100 MYA. The Z chromosomes display conserved synteny, much like the Z in birds or the X in mammals. The W, on the other hand, is evolving rapidly. It is crammed with repetitive elements which appear to have a high turnover rate, but poor in or even devoid of protein-coding genes. It has frequently undergone fusion with autosomes or sporadically been lost altogether. |
| Rights: | The original publication is available at www.springerlink.com |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/49121 |
| Appears in Collections: | 農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 佐原 健
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