Genetic EngineeringJAMA Group of new research techniques that manipulate the DNA (genetic material) of cells. The gene-splicing technique, which produces recombinant DNA, is a method of transporting selected genes from one species to another. For example, in this technique, the genes, which are actually portions of molecules of DNA, are removed from the donor (insect, plant, mammal, or other organism) and spliced into the genetic material of a virus; the virus then is allowed to infect recipient bacteria. In this way the bacteria become recipients of both viral and foreign genetic material. When the virus replicates within the bacteria, large quantities of the foreign as well as the viral material are produced.
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