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

DNA ligase
DNA polymerase
Restriction endonuclease
DNA helicase

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Recombinant DNA
The Southern blotting technique depends on

the molecular mass of proteins
similarities between the sequences of probe protein and experimental protein
similarities between the sequences of probe RNA and experimental RNA
similarities between the sequences of probe DNA and experimental DNA

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Recombinant DNA
Vectors are

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

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