Enzyme not involved in DNA replication

Correct Answer: (C) Reverse transcriptase

Explanation of options:

• Helicase: Unwinds the DNA double helix to form single-stranded templates.
• Topoisomerase: Relieves supercoiling stress by cutting and rejoining DNA strands.
• Reverse transcriptase: Synthesizes DNA from an RNA template and is involved in retroviruses, not DNA replication.
• Primase: Synthesizes RNA primers to initiate DNA synthesis.