Which option gives the most correct conditions needed for evolution?
Answer and explanation
Correct answer: Heritable variation and the effect of selection or chance across generations
Evolution is a population-level change that becomes visible across generations. It requires variation among individuals, and the variation must be heritable so that it can be transmitted to offspring. Natural selection can increase traits that improve reproductive success, while chance events such as genetic drift can also alter trait frequencies. Option A includes all these essential conditions. Acquired practice, a single-day change, or change without reproduction cannot produce lasting evolutionary change.
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What is the correct answer to this question?
Heritable variation and the effect of selection or chance across generations
Why is this the correct answer?
Evolution is a population-level change that becomes visible across generations. It requires variation among individuals, and the variation must be heritable so that it can be transmitted to offspring. Natural selection can increase traits that improve reproductive success, while chance events such as genetic drift can also alter trait frequencies. Option A includes all these essential conditions. Acquired practice, a single-day change, or change without reproduction cannot produce lasting evolutionary change.
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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