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If a trait becomes more common in a small isolated population without special advantage what can it be an example of?

Answer and explanation

Correct answer: Genetic drift

Genetic drift is the chance-driven change in allele frequencies, and its effect is especially strong in a small, isolated population. A trait can become common simply because of random reproduction or the accidental survival of particular individuals, even when the trait gives no special advantage. Therefore option A is correct. Natural selection requires a relationship with differential fitness, while acquired traits and analogous organs describe different concepts.

Related tags

Genetic DriftSmall PopulationEvolutionHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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