您要查找的是不是:
- Selection pressures pull in different directions, and the adaptation that results is some kind of compromise. 选择压力往不同的方向拉,结果产生的适应是某种类型的妥协。
- Divergent evolution The evolution of different forms from a single basic structure in response to different selection pressures. 趋异进化:来源于共同祖先的一个种或一个植物类群,由于长期生活在不同的环境,产生了向不同方向发展的变异特征。
- In the experiments, the optimal selection pressures of kanamycin for shoot regeneration and rooting were also determined. 在此基础上,确定了不定芽再生和生根的卡那霉素选择压。
- Selection pressure is higher in the sea so surviving is more difficult. 海里的天择压力较大,因此生存较为困难。
- Evolutionary selection pressure has probably entrenched the behavior in social animals such as ourselves. 其原因大概是由于进化中的适者生存的压力固化了像我们这样的社会性动物的行为。
- This divergence, and indeed all the anatomical sex differences in the brain, presumably arose as a result of selective pressures during evolution. 这个性别间的差异,以及脑子所有的解剖性差,大概是在演化过程中由天择压力塑造的。
- During breeding for vertical resistance, horizontal resistance tends to decline because of negative selection pressure. 当培育垂直抗性时,由于负的选择压力,水平抗性趋于下降。
- We believe from mutations under the positive evolutionary selection pressure of insufficient drug. 我们认为是来自於不足药量的选择压力下所导致的演化上的突变。
- This would allow the role of selective pressures in the evolution of imprinting mechanisms, and the timing of the recruitment of epigenetic mechanisms, to be determined. 这将使在印记机制的演变中选择压力的作用以及后生机制的补充时间可以被确定。
- She found the number of species is dwindling and some species are dwarfing due to selection pressure because only the smallest flowers remain unpicked. 她发现那些种类在缩小和矮化病其原因在选择的压力因为只有很小的花保留未摘。
- In IGAA a simulated annealing algorithm is used to alleviate the selection pressure of the genetic algorithm, and enhance the global convergence of IGAA. 在改进的遗传算法中利用模拟退火的方法可以缓解遗传算法的选择压力,增强了遗传算法的全局收敛性,避免了在搜索过程中陷入局部最优。
- Furthermore, when he dissected the genes of these mutated bacteria by sequencing them, he found mutations in no areas other than the one where there was selection pressure. 不止如此,当他通过对这些突变细菌的基因测序并将其分离出来之后,发现只有那些有选择压力的领域发生了突变。
- However, many critics point out that the usefulness of sociobiology as an explanatory tool breaks down once a trait is so variable as to no longer be exposed to selective pressures. 这是符合社会生物学者身份的。然而,许多评论家指出,如果一个性状是如此易变的东西以致于它不再遭受到选择压力,那么,社会生物学作为一种解释工具就失效了。
- That shop has a fine selection of cakes. 那家商店有各种精美的糕点供我们选择。
- That store has a good selection of furniture. 那家店有很多家具可供挑选。
- The selection was weighted against me. 那次选拔对我不利55。
- Determination of the Selecting Pressure for Genetic Transformation of Platanus acerifolia Willd. 悬铃木遗传转化过程中选择压力的确定。
- She helped to select a dress for Ruth. 她帮着给露丝选了一件衣裳。
- In the agrobacterium-mediated gene transformation, the selecting pressure is 20mg/L Kan. 1 在农杆菌介导的基因转化中,确定了有效的Kan选择压为20 mg/L;
- This would lead to a selective pressure on men to take the task of propositioning very seriously indeed. 这就导致选择性的压力,当一个男人必须相当严肃的对待他试图接近的异性。