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单词 selection pressure
释义

selection pressure

noun Biology
An agent of differential mortality or fertility that tends to make a population change genetically: their range of variation is constrained by natural selection pressures imposed by their environment...
  • In selection schemes improvements can be larger, but it depends on the structure of the population, the selection pressure, and the restriction on inbreeding imposed.
  • Therefore, the putative selection pressure for metabolic efficiency does not change the rate of nonsynonymous substitutions.
  • What happens is, in theory, unless you apply a selection pressure onto a population it stays the same.
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更新时间:2024/9/20 15:02:46