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How is genetic drift different from natural selection?

Answer and explanation

Correct answer: Genetic drift can occur by chance, whereas natural selection is linked with differences in reproductive success

Genetic drift is a random change in allele frequencies, especially noticeable in small populations; chance events can make a trait common or rare without regard to usefulness. Natural selection is non-random with respect to reproductive success: heritable traits that improve survival or reproduction tend to spread. Therefore A is correct. B wrongly assigns drift to environmental choice, while C and D deny established distinctions.

Related tags

Genetic-DriftNatural-SelectionEvolutionEvolution And SpeciationHeredity And EvolutionScienceClass 10 Mcq

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