CBSE 2026 · Region 2 · Set 1 · Q16 · 1 mark
Assertion (A) : DNA Ligase is used to join DNA fragments.
Reason (R) : It catalyses the formation of glycosidic bonds between nucleotides.
Official answer
From CBSE’s own marking scheme for this paper.
(C)
Assertion (A) is true, Reason (R) is false.
Biotechnology : Principles and ProcessesProcesses of Recombinant DNA TechnologyUnderstandassertion_reasonmedium
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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.