Even after replication, how the modified DNA remains protected?
A. It remains protected because of conservative mode of replication
B. It remains protected because of semi-conservative mode of replication
C. The mode of replication has no role to play in the protection
D. It is again modified after replication
Explanation: Because of the semi-conservative mode of replication, one of the DNA strands remain methylated even after replication. One methylated strand is sufficient for providing protection against cleavage by a restriction endonuclease.