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What may be necessary in separated groups for speciation?

Answer and explanation

Correct answer: Accumulation of different changes for a long time

Speciation generally requires separated populations to accumulate genetic differences over many generations. Different environments, mutations, natural selection and limited gene flow can make the groups increasingly distinct. If these differences eventually produce reproductive isolation, the populations may be recognized as separate species. Option A captures this gradual process. Immediate sameness, chromosome loss or permanent absence of reproduction would not explain the formation of a new species.

Related tags

SpeciationReproductive IsolationGenetic VariationFertilization And DevelopmentHow Do Organisms ReproduceScienceClass 10 Mcq

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