Three different areas of criticism of the biological species concept are considered: 1. The impracticability of the criterion of reproductive isolation. The demand for more practical criteria is rejected, becaus
This explanation should be compared with that given by the ecological species concept. Interbreeding between species is prevented by isolating mechanisms. Many biologists, includingRichard Dawkins, define a species by the biological species concept....
1. 生物学物种观念 他是生物学物种观念(biological species concept)的创始人之一,他定义同一物种为一群能够交配且生下具生育力后代的个体 … blog.udn.com|基于23个网页 2. 物种概念中的生物物种观念 ...eciation)理论的德裔鸟类学家,并且他也创立物种概念中的生物物种观念(biological species concept)--即强调...
Experimental work in aquatic ecosystems has shaped the development of the field of ecology, and our ability to predict ecological dynamics in a changing climate. In this Perspective, the authors discuss the past, present and future role of experimental approaches in aquatic ecology. ...
以下有关生物种概念(Biological species concept)的叙述,哪个正确( ) A.可适用于有性与无性生殖生物B.强调生殖隔离机制的重要性 C.前哈佛大学教授Ernst Mayr为提出生殖隔离机制的第一人 D.因为在人工环境下容易打破生殖隔离因此不易由实验证实 点击展开完整题目 ...
Species recognised by the phylogenetic species concept sometimes also would be recognised as species by the biological species concept. 答案:正确 你可能感兴趣的试题 判断题 距离越远的物体,张角越小。 答案:正确 单项选择题 在单相半波可控整流电路不接续流二极管的电感负载电路,需要加续流二极管为了()。
At higher-latitude sites with small temperature gradients, depth-dependent increases inCremin(Fig.3) may be disproportionately influenced by vertical gradients in particle characteristics (for example, substrate availability), ecological shifts (community) and/or physiological changes (exo-enzymes to match...
Biodiversity(生物多样性), or biological diversity, is a wide-ranging concept that covers all the different kinds of plant and animal species present on earth. Environmentalists believe that many millions of species exist. As all these living organisms are dependent on each other in some way, bi...
Grouping has also been studied in accordance to the ecological validity of such rules as they appear to be embedded in the statistics of natural scenes (Brunswik and Kamiya, 1953). Mechanisms that entail contour groupings are implemented in the structure of supragranular horizontal connections in ...
parallelism: the independent development of similar traits or features (as of body structure or behavior) in different species or lineages that have common ancestry and that typically occupy similar environments or ecological niches nonconformist: a Protestant who did not "conform" to the governance an...