Word: plasmids
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Dates: during 1975-1975
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Finally-after several experiments -Chakrabarty discovered that irradiating the host organisms with ultraviolet light after plasmid transfer induced a genetic cross-linking that fixed the new genes in place and produced stable bacteria with a healthy appetite for oil. The new microbe, to which Chakrabarty gives the jawbreaking description "multi-plasmid hydrocarbon-degrading pseudomonas," can digest about two-thirds of the hydrocarbons involved in an oil spill. The new microbes have been tested only in the laboratory, where a pinch of microbes will eat an eyedropper of oil in a matter of days. This may seem slow...