A) Bacillus polymixa
B) Bacillus brevis
C) Bacillus subtilis
D) Bacillus thuringiensis
Correct Answer: D
Solution :
Insect resistant genes are found in the bacterium Bacillus thuringiensis. The cry gene of B. thuringiensis produces a protein which forms crystalline inclusions in the bacterial spores. These crystal proteins are responsible for insecticidal activities of the bacterial strains. The antibiotic polymyxin B is commercially produced from Bacillus polymyxa.
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