CBSE 2025 · Region 7 · Set 3 · Q1 · 1 mark
The RNA triplet UAG acts as a stop codon which terminates the synthesis of a polypeptide. Below is given a strand of DNA which codes for four amino acids. In which position will an insertion of a thymine nucleotide result in the termination of translation ? DNA strand :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
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CBSE Class 12 Biology past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.