CBSE 2026 · Region 3 · Set 1 · Q10 · 1 mark
The smallest part of DNA molecule that can be changed by point mutation is :
Official answer
From CBSE’s own marking scheme for this paper.
(D)
Nucleotide
Molecular Basis of InheritanceGenetic CodeRemembermcqeasy
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CBSE Class 12 Biology past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.