Bio-Chemistry (M.Phil./Ph.D.) 2015 Panjab University Entrance Exam With Answers

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48.

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

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

The answer is: A