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

DNA polymerase
DNA ligase
DNA helicase
Restriction endonuclease

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Recombinant DNA
Agrobacterium tumefaciens is

a fungi that is used to produce antibiotics in large amounts
a disease in humans that causes loss of sight
a bacterium that can be used to introduce DNA into plants
a disease in humans that causes loss of weight

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Recombinant DNA
The Southern blotting technique depends on

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

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Recombinant DNA
Vectors are

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

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