Recombinant DNA
Charged molecules are separated based on varying rates of migration through a solid matrix when subjected to an electric field. This technique is known as

photoreactivation
blotting
gel electrophoresis
autoradiography

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Recombinant DNA
Vectors are

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

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