NEETZoologyBiotechnology and Its Applications
Which of the following genes were introduced in cotton to protect it from cotton bollworm?
Options
- ACry Ac and cry Ab
- BBt Ac and Bt Ab
- CCry IAc and cry II Ab
- DNif genes
Correct answer
C. Cry IAc and cry II Ab
Step-by-step solution
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 cryIAc and cryIIAb control the cotton bollworms, that of cryIAb controls corn borer.