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Why can the effect of genetic drift be stronger in a small population?

Answer and explanation

Correct answer: Because some traits can increase or decrease quickly by chance

Genetic drift is random change in allele frequency. In a small population, each individual represents a relatively large fraction of the gene pool, so the accidental loss, survival, or reproduction of only a few individuals can greatly change the proportion of alleles. Repeated chance events may even eliminate an allele. Option A is correct; B, C, and D are biologically false explanations.

Related tags

Genetic-DriftSmall-PopulationAllele-FrequencyChanceHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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