Question 4: What are Cry proteins? Name an organism that produces it. How has man exploited this protein to his benefit?
Class 12 - Biology - Biotechnology and its Applications Page 216
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Cry proteins are toxic proteins (insecticidal proteins) secreted by Bacillus thuringiensis in crystal form during a particular phase of their growth. The toxin is coded by a gene called cry.
The genes encoding cry proteins called Bt toxin genes were isolated from B. thuringiensis and incorporated into several crop plants such as Bt cotton, Bt corn etc. to provide resistance against insect pests.
The genes encoding cry proteins called Bt toxin genes were isolated from B. thuringiensis and incorporated into several crop plants such as Bt cotton, Bt corn etc. to provide resistance against insect pests.
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