Multiple choice

Which function is performed by 3'-5' exonuclease active site of DNA pol I?

  1. Polymerisation

  2. Proofreading

  3. Joining of okazaki fragments

  4. Excision of RNA primer

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The proofreading function of DNA polymerase I is carried out by a 3' to 5' exonuclease.