Question

How many restriction enzymes have been isolated till today ?
(a) More than 700
(b) More than 800
(c) More than 900
(d) More than 600

Answer 1

(a) More than 700 restriction enzymes have been isolated till today.

Answer 2

Dear Student,

◆ Answer -

(c) More than 900

◆ Extra information -

• Restriction enzymes (aka restriction endonucleases) are enzymes that cleave DNA into fragments at specific sites within molecules.
• Restriction endonucleases are named according to specific nomenclature.
• First 3 letters indicate genus & species of the bacterium from which it's derived, next letter indicates the strain of the organism & lastly comes the order in which the enzyme was discovered.
• Till date, approximately 3000 restriction enzymes have been discovered.

Thanks dear. Hope this helps you...