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Cultivation of Bt cotton has been much in the news. The prefix Bt means

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Cultivation of Bt cotton has been much in the news. The prefix Bt means

(a) barium-treated cotton seeds

(b) bigger thread variety of cotton with better tensile strength

(c) produced by biotechnology using restriction enzymes and ligases

(d) carrying an endotoxin gene from Bacillus thuringiensis

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(d) carrying an endotoxin gene from Bacillus thuringiensis

Explanation:

Bacillus thuringiensis, or Bt, is a bacterium that occurs naturally in the soil, produces a protein that is toxic to certain insect pests, and is widely used as a pest control agent. It is also extremely host-specific.

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