单词 | homostyled |
例句 | The proportions in which these four types appeared shows that the presence or absence of but two factors is concerned, and at the same time provides the key to the nature of the homostyled plants. Mendelism Third Edition Polygonum in possessing only a single heterostyled species is an extreme case; but every other genus of considerable size which includes some such species likewise contains homostyled species. The Different Forms of Flowers on Plants of the Same Species Nevertheless, some species are homostyled; that is, they exist only under a single form; but much caution is necessary on this head, as several species when cultivated are apt to become equal-styled. The Different Forms of Flowers on Plants of the Same Species Now Mr. Scott shows in several cases that the same law holds good when two heterostyled species of Primula are intercrossed, or when one is crossed with a homostyled species. The Different Forms of Flowers on Plants of the Same Species The stigmas of O. stricta and of another homostyled species, namely O. tropaeoloides, commonly stand on a level with the upper anthers, and both these species are likewise quite fertile when insects are excluded. The Different Forms of Flowers on Plants of the Same Species H. Muller has suggested that ordinary or homostyled plants may have been rendered heterostyled merely through the effects of habit. The Different Forms of Flowers on Plants of the Same Species But how the sexual elements of heterostyled plants came to differ from what they were whilst the species was homostyled, and how they became co-adapted in two sets of individuals, are very obscure points. The Different Forms of Flowers on Plants of the Same Species Mr. Scott has suggested that the equal-styled varieties arise through reversion to the former homostyled condition of the genus. The Different Forms of Flowers on Plants of the Same Species |
随便看 |
|
英语例句辞典收录了117811条英语例句在线翻译词条,基本涵盖了全部常用单词及词组的例句翻译及用法,是英语学习的有利工具。