Bio-Chemistry (M.Phil./Ph.D.) 2017 Panjab University Entrance Exam With Answers

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24.

In vitro experiments using a mutant DNA polymerase led to an increase in error rate from 10-6 to 10-3. Which activity is defective in mutant DNA polymerase.

A: 5’-3’ polymerase

B: 5’-3’ exonuclease

C: 3’-5’ exonuclease

D: 3’-5’ polymerase

The answer is: C

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