Which one of the following statements about natural selection is not correct? | UPSC CAPF 2026 Q No 86

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Which one of the following statements about natural selection is not correct?

Options:

  1. Natural selection can only occur if there is no variation amongst members of the same species.
  2. Over time, natural selection can increase the frequency of adaptations that are favourable in a given environment.
  3. Species tend to overproduce beyond what the environment can support.
  4. Mutation, meiosis and_ sexual reproduction cause variation between individuals of a species.
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Accepted Answer

Accepted Answer: (A) Natural selection can only occur if there is no variation amongst members of the same species.

Topic Covered: Biology and Environmental Science

Key Concept: Ecology, genetics, biotechnology and life processes

The correct choice follows from the standard scientific definition or process involved. “Natural selection can only occur if there is no variation amongst members of the same species.” matches the relevant biological, ecological, chemical or energy concept, while the alternatives conflict with the core principle.

The key is to apply the central fact, formula, definition or relationship tested in the question and then eliminate alternatives that do not satisfy it.

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