Practice question

MCQ

Question

What is the role of topoisomerase in DNA replication?

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Choose one · Correct answer highlighted

Unwinds the DNA helix Prevents overwinding of DNA ahead of the replication fork Correct Synthesizes RNA primer Joins Okazaki fragments

Explanation

Topoisomerase prevents the overwinding of DNA ahead of the replication fork by relieving torsional strain. This follows from NCERT principle where relation explains outcome clearly for students.

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