自然选择

Biologists have theorised that mothers may give birth to more female offspring during times of stress or ill health, because it confers an evolutionary advantage.

生物学家认为，上述现象是自然选择的结果，因为在食物不充足的情况下，雌性后代更利于进化。

Savants of science debated notonly the power of natural selection, but also the origin of the solar system, the age and internal structure of Earth, and the prospect of a plurality of worlds populating the cosmos.

专家们不只争论自然选择的威力，同样争论太阳系的起源，以及地球的年龄和内部结构，以及太空移民的前景。

It helps to understand some evolvement processes of species, especially in dynamical system. For instance, studying the growth of cod fish simulation of wolf in Alaska, relationship between death age and relatives, evolvement. of species, evolvement process of competition, reproduce and natural selection of haploid, and one-species cellular automata model based on the Penna model was founded on a lattice of two dimensions.

利用Penna模型有助于理解一些生物演化过程，尤其是在种群动力系统中发挥了重要作用，如北极鳕鱼生长的研究，Alaska狼群模拟，近亲遗传死亡年龄之间的关系，种群的演变，单倍体种群的竞争，繁殖，自然选择等种群演变过程，二维格子上建立基于Penna模型的单物种元胞自动机模型是Penna模型与格子结合的早期文献。

I believe that the existence of natural selection decide the way of life, there are biological or cell biological membrane is the first origin of life-life product of evolution and development; no biological membrane that is non-cell biology is the origin of life re-evolution of life and development.

笔者认为自然选择决定生命存在的方式，有膜生物即细胞生物是生命最初起源的生命体进化和发展的产物；无膜生物即非细胞生物是生命再度起源的生命体进化和发展的产物。

He clearly saw, however, the full force of the principle of natural selection.

无论怎样说，他已清楚地看到了自然选择原理的十足力量。

ABSTRACT Evolutionary algorithm is a new adaptive search method based on principle of natural selection, which is an intersect subject and ...

进化算法是基于自然选择原理的一种全新的自适应搜索算法，是生命科学与工程科学的交叉学科，也是计算机科学和系统优化领域的热点研究课题。

Natural selection is a very grim natural reaper.

自然选择是自然界冷酷的死神。

Natural selection is a very grim natural reaper.

自然选择是自然界的冷酷收割机。

Genotype and phenotype The genotype is the genetic composition of an individual.

适应 是自然选择的结果。基因型和表型基因型是个体的遗传组成。

Inherited behavioral traits have been honed by natural selection.

通过继承得到的行为性状已经经过自然选择的练就。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。