Question Detail
Question
The enzyme that seals DNA fragments is: A. DNA polymerase B. RNA primase C. DNA ligase D. Helicase
Correct Answer
Option C is the correct answer.
Detailed Explanation
DNA ligase is the enzyme that catalyzes the formation of a phosphodiester bond between the 3'-OH end of one DNA fragment and the 5'-phosphate end of another. It 'seals' nicks in the DNA backbone, joining Okazaki fragments on the lagging strand.
Hint
It acts like glue, sticking DNA pieces together.