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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Hen feathering in cocks ： ウィキペディア英語版 Hen feathering in cocks Hen feathering in cocks is the occurrence of a genetically conditioned character in domestic fowl (''Gallus gallus domesticus''). Males with this condition develop a female-type plumage, although otherwise look and respond as virile males. Hen-feathering in cocks is one of the typical characteristics of the Belgian breed Campine and also is typical in Sebright Bantam, a breed established circa 1810, in accordance with the intentions of its creator, Sir John Saunders Sebright. It is also a condition found with lower frequencies in other breeds such as Hamburgs, Wyandottes and Games.〔Hutt, F.B. Genética Avícola. Salvat Editores,S.A. 1ra.ed. España, 1958〕 Sexual dimorphism in plumage is very common in birds,〔Domm, L. V. Modifications in sex and secondary sexual characters in birds. Chapter V. in "Sex and Secretions" 2nd.ed. The Williams & Wilkins Co. Baltimore, 1939.〕 particularly within Phasianidae where males are bigger and have brighter and more colorful plumage than females among other morphological differences.〔Greenwood, A. W. and Blythe, J. S. S. 1938 Sex dimorphism in the plumage of the domestic fowl.Journal of Genetics. 36, 53-72.〕 ==Cocks with hen-feathering== Males of most chicken breeds distinguish from their females in having longer, sharp and more scalloped feathers in neck, hackle, saddle and wing bows. But in some breeds, like the fancy breeds Sebright and Campine and some game breeds like Pettai Madhirione can see males that have a plumage completely similar in all aspects to that of females. This unusual type of feathering called so much the interest of biologists that was studied from different points of view, and as a consequence, the inheritance of this condition has been well understood, while the biochemical basis determining this condition is still under study. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hen feathering in cocks」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.