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NEET · Biology · STD 12 - 10. biotechnology and its application

Which of the following \(Bt\) crops is being grown in India by the farmers?

  1. A Brinjal
  2. B Soybean
  3. C Maize
  4. D Cotton
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Answer & Solution

Correct Answer

(D) Cotton

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Detailed explanation

(d) : \(Bt\) toxin genes were isolated from Bacillus thuringiensis and incorporated into the several crop plants such as cotton. The choice of genes depends upon the crop and targeted pest, as most \(Bt\) toxins are insect­group specific. The toxin is coded by a gene named cry. These are numerous genes. Two cry genes cry \(I\ Ac\) and cry \(II\ Ab\) have been incorporated in cotton. The genetically modified crop is called \(Bt\) cotton as it contains \(Bt\) toxin genes against cotton bollworms.