# The enzymes which act as molecular scissors in recombinant DNA technology are :
A. Exonucleases
B. Endonucleases
C. Polymerases
D. Isomerases
The correct answer is B. Endonucleases.
Restriction enzymes are also called molecular scissors as they cleave DNA at or near spcific recognition sequences known as restriction sites. These enzyme make one incision on each of the two strands of DNA and are also called restriction endonucleases.
No comments:
Post a Comment