1.

The restriction endonuclease is having a defence mechanism in bacterial system against foreign DNA such as viruses. But how it is able to protect its own DNA?

A. By methylation of bacterial DNA by restriction enzyme
B. By methylation of foreign DNA by restriction enzyme
C. By phosphorylation of bacterial DNA by restriction enzyme
D. By phosphorylation of foreign DNA by restriction enzyme
Answer» B. By methylation of foreign DNA by restriction enzyme


Discussion

No Comment Found

Related MCQs