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Why may isolation alone not be enough for speciation?

Answer and explanation

Correct answer: Because genetic differences must also accumulate

Isolation reduces gene flow, but it does not by itself guarantee that separated populations will become different species. Speciation generally requires inherited genetic divergence to accumulate through mutation, recombination, drift and selection, eventually leading to reproductive isolation. Hence option A is correct. B is the opposite of divergence, while C and D make absolute biological claims that are false; isolated populations can still reproduce within their own groups.

Related tags

SpeciationIsolationGenetic DivergenceHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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