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Biology · 2026 · 1 mark
CBSE 2026 · Region 3 · Set 2 · Q16
Assertion (A): Hardy-Weinberg principle says that allele frequencies in a population are stable. Reason (R): Hardy-Weinberg principle is applicable…
Assertion (A) : Hardy-Weinberg principle says that allele frequencies in a population are stable.
Reason (R) : Hardy-Weinberg principle is applicable only when genetic drift does not occur.
Official answer
(C)
Assertion (A) is true, but Reason (R) is false.
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CBSE Class 12 Biology past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.