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Which enzyme is used to covalently link two DNA fragments to form a stable recombinant DNA molecule?

A) DNA polymerase
B) Ligase
C) Helicase
D) Topoisomerase

User Stekhn
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1 Answer

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Final answer:

DNA ligase is the enzyme used to covalently link two DNA fragments to form a stable recombinant DNA molecule.

Step-by-step explanation:

The enzyme used to covalently link two DNA fragments to form a stable recombinant DNA molecule is DNA ligase. DNA ligase catalyzes the formation of a covalent phosphodiester linkage between the 3'-OH end of one DNA fragment and the 5' phosphate end of another DNA fragment. This process is essential for the creation of recombinant DNA molecules in genetic engineering.

User Aleksey Shevchenko
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