Question

Which among the following is NOT TRUE regarding Restriction endonucleases?

• A. They were named on the basis that the first letter of the name comes from the genus and the second two letters come from the species of the prokaryotic cell from which they were isolated
• B. They function by inspecting the length of a DNA sequence
• C. They add methyl groups to DNA
• D. They recognizes a specific palindromic nucleotide sequence in the DNA

Answer 1

Answer:

C. They add methyl groups to DNA

• Restriction enzymes are also called "molecular scissors" as they cleave DNA at or near specific recognition sequences known as restriction sites.

• These enzymes make one incision on each of the two strands of DNA and are also called restriction endonucleases.