A
During naming of restriction enzyme, the first letter comes from genus and the second two letters come from the species of prokaryotic cell from which it is isolated.
B
Methylases add methyl group to viral DNA and endonucleases help cleave viral DNA.
C
Restriction endonucleases are present in all organisms and help cleave both phosphoester bonds and hydrogen bonds.
D
A restriction enzyme recognise a specific palindromic nucleotide sequence and cleave the DNA outside a palindromic sequence.
Solution:
During naming of restriction enzyme, the first letter comes from genus and the second two letters come from the species of prokaryotic cell from which it is isolated.
