An agent of differential mortality or fertility that tends to make a population change genetically.
〔 生〕选择压力
their range of variation is constrained by natural selection pressures imposed by their environment
Example sentencesExamples
What happens is, in theory, unless you apply a selection pressure onto a population it stays the same.
Therefore, the putative selection pressure for metabolic efficiency does not change the rate of nonsynonymous substitutions.
Obviously, the higher their metabolism the greater the selection pressure they would have exerted on the contemporary vegetation.
Such selection pressure may have different origins.
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.
Definition of selection pressure in US English:
selection pressure
noun
Biology
An agent of differential mortality or fertility that tends to make a population change genetically.
〔 生〕选择压力
their range of variation is constrained by natural selection pressures imposed by their environment
Example sentencesExamples
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.
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.
Obviously, the higher their metabolism the greater the selection pressure they would have exerted on the contemporary vegetation.
Such selection pressure may have different origins.