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单词 genetic drift
释义

Definition of genetic drift in English:

genetic drift

noun
mass nounBiology
  • Variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.

    Example sentencesExamples
    • The first alternative is that the long basal branches are simply the chance result of genetic drift in a large, panmictic ancestral population.
    • Rare and endangered species are susceptible to loss of genetic variation through genetic drift in small populations.
    • The relative importance of selection and genetic drift in the evolution of duplicated genes is under debate.
    • This is different than the traditional effective sizes, which are descriptions of the equilibrium behavior of genetic drift in the population.
    • In the absence of selection, these values reflect divergence in allele frequencies due to genetic drift.
 
 

Definition of genetic drift in US English:

genetic drift

noun
Biology
  • Variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.

    Example sentencesExamples
    • The relative importance of selection and genetic drift in the evolution of duplicated genes is under debate.
    • The first alternative is that the long basal branches are simply the chance result of genetic drift in a large, panmictic ancestral population.
    • Rare and endangered species are susceptible to loss of genetic variation through genetic drift in small populations.
    • This is different than the traditional effective sizes, which are descriptions of the equilibrium behavior of genetic drift in the population.
    • In the absence of selection, these values reflect divergence in allele frequencies due to genetic drift.
 
 
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更新时间:2025/3/15 11:33:26