Given below are two statements: <brStatement I : Bt toxins are insect group specific and coded by a gene cry…

Given below are two statements:
  1. Both Statement I and Statement II are false
  2. Statement I is false but Statement II is true
  3. Statement I is false but Statement II is true
  4. Both Statement I and Statement II are true

Solution

The correct answer is option (2) as specific 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 the targeted pest as most Bt toxins are insect-group specific. The toxin is coded by a gene named cry. There are a number of them, for example, the proteins encoded by the genes cry IAc and cry IIAb control the cotton bollworms, that of cry IAb controls corn borer.

Asked in: NEET 2024

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