1.

Due to which of the following DNA repair mechanisms, one is able to distinguish newly synthesized DNA strands from older one?

A. New strands are lower in molecular size
B. New strands do not contain cytosine bases
C. New strands are methylated while old strands are not
D. Old strands are methylated while new strands are not
Answer» B. New strands do not contain cytosine bases


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