CBSE 2024 · Region 1 · Set 3 · Q14 · 1 mark
Assertion (A): Gene flow increases genetic variations.
Reason (R) : The random introduction of new alleles into a recipient population and their removal from donor population affects allele frequency.
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
EvolutionMechanism of EvolutionUnderstandassertion_reasonmedium
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CBSE Class 12 Biology past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.