CBSE 2023 · Region 5 · Set 1 · Q16 · 1 mark
Assertion (A) : In Thalassemia an abnormal myoglobin chain is synthesized due to a gene defect.
Reason (R) : $\displaystyle \alpha$-Thalassemia is controlled by genes HBA1 and HBA2 on chromosome 16.
Official answer
From CBSE’s own marking scheme for this paper.
(D)
Assertion (A) is false, but Reason (R) is true.
Principles of Inheritance and VariationGenetic DisordersAnalyseassertion_reasonmedium
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CBSE Class 12 Biology past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.