proofreading

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proof·read·ing

(prūf'rēd-ing),
The property of certain polymerases, for example, DNA polymerase, to use their exonuclease activity to remove erroneously introduced bases and to replace them with the correct bases.

proofreading

(proof′rēd″ing)
In genetics and cellular biology, the ability of a cell to ensure that copies of its genetic information are faithfully made with limited errors or mutations.

proofreading

In genetics, the correction, performed by DNA polymerase, of mistakes in the incorporation of nucleotides in a sequence, the corrections being made after individual units have been added to the chain.