Question

Select the option which gives correct name for the restriction enzyme isolated from Haemophilus

• A. Hpn I
• B. Hae I
• C. Hind III
• D. Hai II

Answer 1

The correct option is C Hind III

Restriction enzymes are called molecular scissors because these enzymes cut DNA at specific sites. The restriction enzymes cut DNA at the specific base sequence, and this specific base sequence is known as the recognition sequence.

The convention for naming restriction enzymes –

• The first letter of the name comes from the genus.
  
• The second two letters come from the species of the prokaryotic cell from which they were isolated, e.g., Hind III comes from Haemophilus influenza.
  

So, the correct option is 'Hind III'.