英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
729236查看　729236　在百度字典中的解释百度英翻中〔查看〕
729236查看　729236　在Google字典中的解释Google英翻中〔查看〕
729236查看　729236　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Evolution by Natural Selection: Examples and Effects of Adaptation
    Evolution is the result of the tendency for some organisms to have better reproductive success than others — natural selection It's important to remember that differences between individuals, even individuals from different generations, don't constitute evolution Those are just variations of traits
  • Chapter 8: Natural Selection and Relative Fitness - Quizlet
    Natural selection works by organisms producing a lot of offspring, each varying in traits, and not all survive But the ones that do reproduce more It's a circle Observation #1: members of a population often vary in their inherited traits
  • Natural Selection - National Geographic Society
    Natural selection is the process through which populations of living organisms adapt and change Individuals in a population are naturally variable, meaning that they are all different in some ways This variation means that some individuals have traits better suited to the environment than others
  • LS4. B: Natural Selection - The Wonder of Science
    Genetic variations among individuals in a population give some individuals an advantage in surviving and reproducing in their environment This is known as natural selection It leads to the predominance of certain traits in a population and the suppression of others
  • Differential Reproductive Success: The Engine of Evolution
    Differential reproductive success describes how certain individuals within a population produce more offspring than others This idea is central to understanding how species change over generations It explains the diversity of life on Earth and is a core element in the study of evolution
  • Differential Reproductive Success in the Science of Evolution
    Sometimes called "survival of the fittest," natural selection is the process by which those individuals with genetic traits better suited to their environments live long enough to reproduce many offspring, thereby passing the genes for those favorable adaptations to the next generation
  • Natural Selection | Encyclopedia. com
    Whenever one organism leaves more successful offspring than others, in time its genes will come to dominate the population gene pool Ultimately, natural selection operates only by differential reproductive success
  • Evolutionary fitness - Understanding Evolution
    In evolution, fitness is about success at surviving and reproducing, not about exercise and strength Of course, fitness is a relative thing A genotype’s fitness depends on the environment in which the organism lives The fittest genotype during an ice age, for example, is probably not the fittest genotype once the ice age is over
  • Natural selection in populations (article) | Khan Academy
    When a phenotype produced by certain alleles helps organisms survive and reproduce better than their peers, natural selection can increase the frequency of the helpful alleles from one generation to the next – that is, it can cause microevolution
  • How do organisms that are most suited to their environment survive and . . .
    Organisms that are most suited to their environment are more likely to survive and reproduce most successfully because they have traits that give them an advantage over other organisms





中文字典-英文字典  2005-2009