Why is variation necessary for evolution?
Answer and explanation
Correct answer: Because natural selection acts on variations
The governing concept is natural selection. Individuals in a population show heritable differences, and some of these variations may provide better survival or reproductive success in a particular environment. Natural selection favours such advantageous variants, allowing their associated traits to become more common over generations. Variation is not always harmful, and it does not stop reproduction or remove chromosomes. Without differences among individuals, selection would have little material on which to act.
Frequently asked questions
What is the correct answer to this question?
Because natural selection acts on variations
Why is this the correct answer?
The governing concept is natural selection. Individuals in a population show heritable differences, and some of these variations may provide better survival or reproductive success in a particular environment. Natural selection favours such advantageous variants, allowing their associated traits to become more common over generations. Variation is not always harmful, and it does not stop reproduction or remove chromosomes. Without differences among individuals, selection would have little material on which to act.
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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