Q22. Identify the wrong statement with regard to Restriction Enzymes.

4. Sticky ends can be joined by using DNA ligases.

Solution:
Sticky ends contain free or hanging or unpaired nitrogen bases which can pair to complementary bases present on other DNA segment required to create a recombinant DNA. A ligase is required in absence of sticky ends to join together two segments of DNA. So, the correct answer is 'Sticky ends can be joined by using DNA ligases.'

Q22. Identify the wrong statement with regard to Restriction Enzymes.