Bio-Chemistry (M.Phil./Ph.D.) 2014 Panjab University Entrance Exam With Answers

Practice Mode:
39.

Which of the following reactions is required for proofreading (i.e correcting replication errors) during DNA replication by DNA polymerase III?

A: 3’ – 5’ exonuclease activity
B: 5’ – 3’ exonuclease activity
C: 3’ – 5’ endonuclease activity
D: 5’ – 3’ endonuclease activity

The answer is: A