NEET Biology question

BiologyMolecular Basis of InheritanceNEET

Match the given enzymes with their respective function in DNA replication.

| Column-I | Column-II | |---|---| | (A) DNA helicase | (1) A protein which prevents DNA polymerase-III from dissociating from the DNA parent strand | | (B) DNA polymerase | (2) Bind to ssDNA and prevent the DNA double helix from re-annealing after DNA helicase unwinds it, thus maintaining the strand separation | | (C) DNA clamp | (3) Also known as the helix-destabilising enzyme; unwinds the DNA double helix at the replication fork | | (D) Single-Strand Binding (SSB) Proteins | (4) Builds a new duplex DNA strand by adding nucleotides in the 5' to 3' direction; also performs proofreading and error correction |

Answer: (B)

Solution

DNA helicase unwinds the double helix at the replication fork (A-3), DNA polymerase builds the new strand with proofreading (B-4), the DNA clamp

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Question ID VK-121022