Name the enzyme that facilitates opening of DNA helix during transcription.

1. DNA ligase

2. DNA helicase

3. DNA polymerase

4. RNA polymerase

Doubtly Asked 30 Oct 2026 NEET UG 2020 Practice test neet Save WhatsApp Report

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Answer: 4. RNA polymerase

During transcription, RNA polymerase itself unwinds the DNA helix locally and synthesises RNA.

DNA helicase opens DNA in replication, DNA polymerase synthesises DNA, and DNA ligase joins DNA fragments.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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