How can geographical isolation help in evolution?
Answer and explanation
Correct answer: Different changes can accumulate in separated groups
Geographical isolation separates populations by barriers such as mountains, rivers, or distance and reduces gene flow between them. Because each group faces its own mutations, variations, selection pressures, and environmental conditions, different changes can accumulate over generations. Reproductive differences may eventually lead to speciation, so option A is correct. Isolation does not make organisms instantly identical, erase chromosomes, or always remove food.
Frequently asked questions
What is the correct answer to this question?
Different changes can accumulate in separated groups
Why is this the correct answer?
Geographical isolation separates populations by barriers such as mountains, rivers, or distance and reduces gene flow between them. Because each group faces its own mutations, variations, selection pressures, and environmental conditions, different changes can accumulate over generations. Reproductive differences may eventually lead to speciation, so option A is correct. Isolation does not make organisms instantly identical, erase chromosomes, or always remove food.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Carbon and its Compounds. Topic: Functional groups.
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