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Question

Proof-reading increases the accuracy of

A
Transcription
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B
DNA replication
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C
Recombination
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D
Peptide bond formation
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E
Electron transport
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Solution

The correct option is B DNA replication
The process of proof reading is to eliminate any wrong nucleotide which has been introduced during DNA replication. The 3′-exonuclease activity of DNA polymerase I and III enzymes helps in the removal of such incorrect nucleotides, resulting in increasing the accuracy during replication.
Thus, the correct answer is option 'DNA replication'.

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