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.
Frequently asked questions
What is the correct answer to this question?
It reduces interbreeding between groups and allows different variations to accumulate
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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