Select the correct option regarding restriction endonuclease.
P. 900 restriction enzymes have been isolated from over 200 strains.
Q. The first restriction exonuclease isolated was Hind II.
R. Each restriction endonuclease recognizes same palindromic sequence.
Hind II was the first isolated Restriction endonuclease. Usually each restriction endonuclease identifies different palindromic sequence.