In the mismatch repair process, enzyme complexes replace bases that were incorrectly inserted into the newly synthesized DNA strand. To function, they must be able to distinguish between the parent DNA strand and the new strand. How is this accomplished?

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The parent strand is methylated, which creates a small but detectable difference between the parent and newly synthesized strands. This allows the enzyme complexes to distinguish between the two and properly repair any mismatched bases.

In the Mismatch Repair Process, Enzyme Complexes Replace Bases That