Answer: Bacillus thuringiensis bacteria (insect-resistant toxin).
- A A plant virus engineered to confer general disease resistance
- B Bacillus thuringiensis bacteria (insect-resistant toxin)
- C A soil fungus known for producing natural antifungal compounds
- D A yeast strain commonly used in industrial fermentation processes
Correct answer: B. Bacillus thuringiensis bacteria (insect-resistant toxin)
Explanation: Bt crops contain the Cry gene from Bacillus thuringiensis, which produces a toxin against specific insect pests. E.g., Bt cotton, Bt brinjal.
Recombinant DNA technology: a gene of interest and plasmid are cut by the same restriction enzyme, ligated into a recombinant plasmid, and introduced into a host cell.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
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