The Bt gene used in Bt cotton is obtained from which organism?
- A.A virus
- B.A bacterium
- C.A fungus
- D.An alga
Show answer
The cry genes of Bt cotton come from Bacillus thuringiensis, a soil bacterium that forms crystal protein during sporulation; the protein is inactive as eaten but becomes a toxin in the alkaline gut of the bollworm, which is why the plant resists the pest.
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