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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 Megaspore mother cell ： ウィキペディア英語版 Megaspore mother cell A megaspore mother cell, or megasporocyte, is a diploid cell in plants in which meiosis will occur, resulting in the production of four megaspores, the spores that develop into female gametophytes.〔Solomon, Eldra P., 2005, ''Biology'', Thomson, Brooks/Cole, United States〕 In angiosperms or flowering plants, the megasporocyte produces a megaspore that develops into a megagametophyte (sometimes called the embryo sac) through two distinct processes – megasporogenesis (formation of the megaspore in the nucellus, or megasporangium), and megagametogenesis (development of the megaspore into the megagametophyte).〔Raven, Peter H., 2005, ''Biology of Plants'', W.H. Freeman and Company Publishers, United States〕 Generally, within each sporangium, meiosis of a megaspore mother cell produces four haploid megaspores.〔 In gymnosperms and angiosperms, only one of these four megaspores is functional at maturity, and the other three soon degenerate. The megaspore that remains divides mitotically and develops into the female gametophyte (megagametophyte) which eventually produces one or more eggs.〔 ==See also== *Microspore, spores that develop into male gametophytes 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「Megaspore mother cell」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.