Question

The two bacteria found to be very useful in genetic engineering experiments are

• A. Nitrosomonas and Klebsiella
• B. Escherichia and Agrobacterium
• C. Nitrobacter and Azotobacter
• D. Rhizobium and Diplococcus

Answer 1

The correct option is B Escherichia and Agrobacterium

Bacteria like E. coli have very short generation times. Combined with the high copy number of plasmid they produce, they duplicate the plasmid with pretty good fidelity for other uses. Agrobacterium tumefaciens is capable of transferring a particular DNA segment of the tumour-inducing (Ti) plasmid into the nucleus of infected cells where it is subsequently integrated into the host genome.

So, the correct answer is 'Escherichia and Agrobacterium'