Q. Microbes found to be very useful in genetic engineering are :
A) Escherichia coli and Agrobacterium tumefaciens
B) Vibrio cholerae and a tailed bacteriophage
C) Diplococcus sp. and Pseudomonas sp.
D) Crown gall bacterium and Caenorhabditis elegans
Explanation
[Solution from source] E. coli is the main host for cloning vectors, and Agrobacterium tumefaciens is used to transfer genes into plants through its Ti plasmid. Caenorhabditis elegans is a nematode, not a microbe. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.