Question

Which enzymes are used by genetic engineers to cut the circular chromosome of bacteria into smaller segments?

A. Construction
B. Primer
C. Residual
D. Restriction

Answer 1

D. restriction enzyme is the correct answer

Answer 2

Correct answer: D). Restriction

A restriction enzyme is a protein that is used to cut DNA in bacteria, they are known to recognize s specific sequence of nucleotide and cut them only at that specific sequence, which is called as a target sequence. It is used in recombinant DNA technology. More than 400 restriction enzyme has been isolated from bacteria.

Example: EcoRI, SmaI etc.