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Plasmid used to construct the first recombinant DNA was isolated from which bacterium species?A. Escherichia coliB. Salmonella typhimuriumC. Agrobacterium tumefacinesD. Thermus aquaicus |
Answer» Correct Answer - B The first recombinant DNA was constructed by Stanley Cohen and Herbert Boyer in 1972. They cut the piece of DNA from a plasmid carrying antibiotic resistance gene in the bacterium Salmonella typhimurium and linked it to the plasmid of Escherichia coil. |
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