Recombinant DNA
Which of the following enzyme is used to covalently bond foreign DNA to a vector plasmid?

Restriction endonuclease
DNA ligase
DNA helicase
DNA polymerase

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Recombinant DNA
Vectors are

molecules that degrade nucleic acids
molecules that help in replication
molecules that protect host cells from invasion by foreign DNA
molecules that are able to covalently bond to and carry foreign DNA into cells

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