Share answer for this question with reason.

Dear student,
Please find below the answer:

The correct option is (3).
After DnaA binds the ori, the enzyme helicase comes into the picture. It continuously unwinds the DNA during DNA replication or separate strands of DNA double helix. Helicases use energy from ATP hydrolysis.  

Hope this clears your doubt.

  • 1
What are you looking for?