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Plasmid used to construct the first reco...

Plasmid used to construct the first recombinant DNA was isolated from which bacterium species?

A

Escherichia coli

B

Salmonella typhimurium

C

Agrobacterium tumefacines

D

Thermus aquaicus

Text Solution

Verified by Experts

The correct Answer is:
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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