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Topic: Mechanism: variation, mutation, recombination, natural selection· Genetics and Evolution

Which one of the following is NOT an advantage of inbreeding?

1. It decreases the productivity of inbred population, after continuous inbreeding.

2. It decreases homozygosity.

3. It exposes harmful recessive genes that are eliminated by selection.

4. Elimination of less desirable genes and accumulation of superior genes takes place due to it.

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Answer: 1. It decreases the productivity of inbred population, after continuous inbreeding.

Key idea: Inbreeding increases homozygosity. It exposes harmful recessive genes that can then be removed by selection, and it helps to accumulate superior genes.

  • Options 3 and 4 are real advantages.
  • Option 1 describes inbreeding depression, a disadvantage that appears after continuous inbreeding.

Option 1 is the answer given by the official key. Option 2 is also not an advantage, since inbreeding increases homozygosity, so the question has two defensible answers.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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