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.
〔生〕遗传漂变
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.
〔生〕遗传漂变
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.