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Biology · 2025 · 1 mark
Biotechnology : Principles and ProcessesProcesses of Recombinant DNA Technology1 markUnderstandassertion reason
CBSE 2025 · Region 7 · Set 1 · Q16
Assertion (A): A piece of DNA inserted into an alien organism generally does not replicate, if not inserted into a chromosome. Reason (R):…
Assertion (A) : A piece of DNA inserted into an alien organism generally does not replicate, if not inserted into a chromosome. Reason $\displaystyle (R)$ : Chromosomes have specific sequences called 'ori' region, where DNA replication is initiated.
Official answer
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
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CBSE Class 12 Biology past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.