If a population has no variation, why will natural selection become limited?
Answer and explanation
Correct answer: Because selection needs different traits to act upon
Natural selection depends on heritable differences among individuals. If every organism has the same relevant trait, environmental conditions cannot favour one individual over another for that trait. Consequently, differential survival and reproduction are limited, so the population cannot readily change through selection. Option A is correct; the other options describe processes unrelated to the requirement of variation.
Frequently asked questions
What is the correct answer to this question?
Because selection needs different traits to act upon
Why is this the correct answer?
Natural selection depends on heritable differences among individuals. If every organism has the same relevant trait, environmental conditions cannot favour one individual over another for that trait. Consequently, differential survival and reproduction are limited, so the population cannot readily change through selection. Option A is correct; the other options describe processes unrelated to the requirement of variation.
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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