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

Select the incorrect statement.

1. Inbreeding increases homozygosity.

2. Inbreeding is essential to evolve purelines in any animal.

3. Inbreeding selects harmful recessive genes that reduce fertility and productivity.

4. Inbreeding helps in accumulation of superior genes and elimination of undesirable genes.

Doubtly Asked 30 Oct 2026 NEET UG 2019 neet Save WhatsApp Report

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Answer: 3. Inbreeding selects harmful recessive genes that reduce fertility and productivity.

Inbreeding increases homozygosity, helps make pure lines, and lets breeders accumulate superior genes and remove undesirable ones through selection.

Statement 3 is the incorrect one: inbreeding exposes harmful recessives, and continued inbreeding can cause inbreeding depression, but it does not select them as a benefit; selection is used to remove them. Statements 1, 2 and 4 match NCERT. Option 3 is the answer.

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

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