The ends of DNA fragments produced by the same restriction enzyme can be joined together by another enzyme,
A)DNA polymerase.
B)DNA methylase.
C)DNA synthetase.
D)DNA ligase.
E)DNA primasE.

Question

Quizplus · Accepted Answer

DNA ligase is the enzyme responsible for joining the ends of DNA fragments produced by the same restriction enzyme. It catalyzes the formation of phosphodiester bonds between the 3' hydroxyl group of one nucleotide and the 5' phosphate group of another nucleotide, creating a continuous strand of DNA. DNA polymerase is responsible for the extension of a DNA strand by adding nucleotides to the 3' end. DNA methylase adds a methyl group to a cytosine or adenine nucleotide, altering the chemical structure of the DNA. DNA synthetase is not a valid term for a known enzyme involved in DNA replication or repair. DNA primase is responsible for synthesizing RNA primers that DNA polymerase can extend from during DNA replication.

The Ends of DNA Fragments Produced by the Same Restriction