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Biology · 2025 · 1 mark
CBSE 2025 · Region 7 · Set 1 · Q14
Assertion (A): Replication of DNA takes place in S phase of the cell cycle. Reason (R): DNA replication and cell division cycle should be highly…
Assertion (A) : Replication of DNA takes place in S phase of the cell cycle. Reason $\displaystyle (R)$ : DNA replication and cell division cycle should be highly coordinated.
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.