Two groups from a common ancestor live in different environments for a long time. What can be the main reason for increasing differences between them?
Answer and explanation
Correct answer: Different selection pressures and accumulation of different changes in different environments
The governing concept is divergent evolution caused by variation and natural selection. Different environments create different selection pressures, so traits useful in one place may be less useful in another. Heritable variations that improve survival and reproduction are passed on and accumulate over many generations. Therefore, geographically separated groups can gradually become increasingly different. Options B, C, and D are incorrect because continued reproduction and inherited variation, not permanent similarity or disappearance of all changes, allow divergence.
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What is the correct answer to this question?
Different selection pressures and accumulation of different changes in different environments
Why is this the correct answer?
The governing concept is divergent evolution caused by variation and natural selection. Different environments create different selection pressures, so traits useful in one place may be less useful in another. Heritable variations that improve survival and reproduction are passed on and accumulate over many generations. Therefore, geographically separated groups can gradually become increasingly different. Options B, C, and D are incorrect because continued reproduction and inherited variation, not permanent similarity or disappearance of all changes, allow divergence.
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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