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How can geographical isolation start the process of speciation?

Answer and explanation

Correct answer: It reduces interbreeding between groups and allows different variations to accumulate

The governing concept is geographical isolation followed by divergence. When a physical barrier separates two populations, their gene flow and interbreeding decrease. Mutations, recombination, natural selection, and chance may then change allele frequencies differently in the two groups. If these differences eventually cause reproductive isolation, the separated populations may form new species. Therefore, option A is correct; the other options incorrectly claim that isolation makes organisms identical, removes genes, or stops evolution.

Related tags

Geographical-IsolationSpeciationGene-FlowHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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