结果1 题目 Natural selection is defined as the process ___ the course of evolution by preserving those traits best adapted for an organism’s survival. A. to which directs B. of which directs it C. directs it D. that directs 相关知识点: 试题来源: 解析 D 反馈 收藏 ...
In natural selection, the organisms that are best ___ to their environments are more likely to survive. A. used B. accustomed C. fitted D. adapted 相关知识点: 试题来源: 解析 D。同第三题,be adapted to 表示适应。used to 是过去常常;be accustomed to 是习惯于;be fitted to 是适合,都...
Nor do I believe that any great physical change, as of climate, or any unusual degree of isolation to check immigration, is actually necessary to produce new and unoccupied places for natural selection to fill up by modifying and improving some of the varying inhabitants. For as all the ...
Variations neither useful nor injurious would not be affected by natural selection, and would be left a fluctuating element, as perhaps we see in the species called polymorphic. We shall best understand the probable course of natural selection by taking the case of a country undergoing some ...
全文围绕的话题是:一个人的基因及进化过程决定了他的交际类型。首段提出了这个研究发现,第2段到倒数第2段对这一研究作了详细的说明,最后一段是结论,再次重申了这一观点。对比首末两段的内容就可以推断出末段的natural selection等同于首段的genes and evolution,它们都是决定一个人交际类型的因素。
Natural selection: Natural selection is an evolutionary mechanism. Organisms that are more adapted to their environments possess a greater possibility...Become a member and unlock all Study Answers Start today. Try it now Create an accoun...
Natural selection is the natural force that is responsible for most of the changes that we see in populations, being the force that determines what traits are advantageous and will increase fitness and selecting for these over those that are disadvantageous. Answer and Explanation: We can match...
This is where one of the best natural selection examples came into play. Some species of fish that lived near the coast developed a strange mutation: the ability to push themselves along in the mud and sand on the shore with their fins. This gave them access to food sources that no...
The proportion of a population's maximum fitness that is lost as a result of selection against the deleterious genotypes it contains. EFFECTIVE POPULATION SIZE The size of the ideal population in which the effects of random drift would be the same as those seen in the actual population. ...
Site selection. (b) Land ownership. (c) Mineral claims. (d) Exploration management. 2. Applications of GIS to the production phase of a mine: (a) Environmental quality monitoring. (b) Facilities management. (c) Volume computations.