Home / Question Bank / Biology / Molecular Basis of Inheritance / Question 6 NEET Biology Class 12 Replication — enzymes and Okazaki fragments Medium Single correct
DNA polymerase can add nucleotides only in the 5'→3' direction. Because the two template strands at a replication fork are antiparallel, one new strand (the lagging strand) cannot be synthesised continuously. How is the lagging strand actually made? (A) As one long continuous strand synthesised in the 3'→5' direction (B) As short fragments called Okazaki fragments, synthesised discontinuously and later joined by DNA ligase (C) By RNA polymerase, which replaces DNA polymerase on the lagging strand only (D) It is not synthesised during replication; only the leading strand is copied, and the lagging strand is retained from the parent unchanged Show answer and explanation ← Question 5 All Molecular Basis of Inheritance questions Question 7 → More NEET Biology chapters © 2026 Lumi (Aikolumi Software Pvt Ltd). Original questions written by Lumi. Free to view and practise on this site. Copying, republishing or reproducing these questions, options or solutions, in print or online, is not permitted.
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