Bio-Chemistry (M.Phil./Ph.D.) 2018 Panjab University Entrance Exam With Answers

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11.

Proofreading activity of DNA polymerase III corrects errors during replication by recognizing incorrect bases at-

A: 3’end of growing chain and removing these by 3’-5’ exonuclease activity
B: 5’end of growing chain and removing these by 3’-5’ exonuclease activity
C: 3’end of growing chain and removing these by 5’-3’ exonuclease activity
D: 5’end of growing chain and removing these by 5’-3’ exonuclease activity

The answer is: A

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