Question

When cut by the same restriction endonuclease, the DNA fragments with staicky ends can be joined with any DNA fragment that contains complementary staicky ends into a molecule of recombinant DNA by the enzyme ______

Options

• DNA polymerase

• exonuclease

• DNA ligase

• Endonuclease

Answer 1

When cut by the same restriction endonuclease, the DNA fragments with staicky ends can be joined with any DNA fragment that contains complementary staicky ends into a molecule of recombinant DNA by the enzyme DNA ligase.

Explanation:

DNA ligase is the enzyme that joins the sticky ends of D A helping in joining different DNA fragments. Endonucleases cut DNA at specific locations, exonuclease cut DNA at the ends. and polymerase helps in forming a new polymer of DNA or RNA whose sequence is complementary to the original templet.