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- secondary natural selection 次生自然选择
- Why should it prevail against natural selection? 它为什么要阻止自然选择呢?
- Can natural selection explain human personality? 物竞天择是否能解释人的性格?
- Natural selection is a very grim natural reaper. 自然选择是自然界的冷酷收割机。
- Darwin saw that he could never account for the beauties of plant and animal life by natural selection, and he had to introduce the great secondary principle of sexual selection. 达尔文觉得他不能够以自然的选择的原理去解释动植物的美,所以他只好提出性的选择这个第二大原理。
- Darwin saw that he could never account for the beauties of plant and animal life by natural selection,and he had to introduce the great secondary principle of sexual selection. 达尔文觉得他不能够以自然的选择的原理去解释动植物的美,所以他只好提出性的选择这个第二大原理。
- This shift is rapid and does not depend on natural selection. 这种变迁的过程很快而且并不取决于自然选择。
- Natural selection has tended to reduce this randomization. 自然选择往往倾向于减少这种随机化现象。
- It stops natural selection and genetic survival dead in its tracks. 大意指将会停止自然选择适者生存。
- The development of species was the result of natural selection. 物种的进化是自然选择的结果。
- Charles Darwin formulated the theory of natural selection. 达尔文系统地阐述了自然淘汰的法则。
- Natural selection primarily means the destruction of the unfit. 自然选择主要意味着不适合者的毁灭。
- He concluded that these expressions evolved through natural selection. 他得出结论,这此表达方式经自然选择演变而来。
- Darwin used the term natural selection for this process of discrimination. 达尔文为这种区分过程使用自然选择这一术语。
- A systematic long-term change of this kind suggests the action of natural selection and indicates that female skeletal characteristics confer greater fitness. But is this the whole story. 这种长期的系统变化说明自然选择的作用,并表明女性骨骼的特性较大的适应性。但是,情况完全是这样的吗?
- Natural selection is a slower process with man than with any other creature. 自然选择对人类比起对其他生物是个较为缓慢的过程。
- In this case, natural selection would tend to add to the stature of the plant. 在此种情况下,自然选择就有增加植物高度的倾向。
- The evolution of species presupposes a process of natural selection. 生物演变是以自然选则的过程为前提的。
- ANTIBIOTIC drugs are a well-known test of the idea of natural selection. 抗生素是对自然选择学说一个十分知名的论证。
- In sharp contrast to the Darwinian theory of evolution by natural selection. 中性理论与达尔文的自然选择进化论有明显的差别。