- A DNA polymerase
- B Helicase
- C Ligase
- D Primase
Correct answer: B. Helicase
Explanation: Helicase unwinds the parental DNA double helix at the replication fork, separating the two strands for replication.
Concept context
DNA structure, replication, transcription, translation, the genetic code, and gene regulation (lac operon). The single most important chapter for NEET molecular biology.