NEET Zoology Biotechnology Principles and Processes Questions Solved

Restriction enzymes do not act on the the DNA of the Host cell in which they are produced because
a. Host DNA is packed into chromosomes
b. Restriction enzymes are ineffective on host DNA
c. Host DNA does not have the restriction site for the Restriction enzymes.
d. Restriction site of host DNA is methylated.

The host sequences are protected by methylation of bases by Methyl transferases

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