Question

Restriction endonucleases are called so as they

• A. synthesize DNA
• B. restrict nuclear activity
• C. cleave DNA into fragments at or near restriction sites
• D. break DNA at random

Answer 1

The correct option is C cleave DNA into fragments at or near restriction sites

Restriction endonucleases are called so as they cleave DNA into fragments. A restriction enzyme, restriction endonuclease is an enzyme that cleaves DNA into fragments at or near specific recognition sites within molecules known as restriction sites. Restriction enzymes are one class of the broader endonuclease group of enzymes.