CBSE 2024 · Region 5 · Set 1 · Q15 · 1 mark
Assertion (A) : In birds the sex of the offspring is determined by males.
Reason (R) : Males are homogametic while females are heterogametic.
Official answer
From CBSE’s own marking scheme for this paper.
(D)
(A) is false, but (R) is true.
Principles of Inheritance and VariationSex DeterminationAnalyseassertion_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.