Bt toxins are not toxic to bacillus and Bt cotton plant but toxic to insects. Explain.

Why does the Bt toxin not kill the bacterium that produces it but kills the insect that ingest it?

Bacillus thuringiensis produces inssecticidal proteins, called Bt toxins. Explain how Bt toxin works in insects and kill them.

Bt toxin is produced by Bacillus thuringiensis that can kill certain insects. Name the bacterial gene that is producing this toxin.

Bt toxin is produced by Bacillus thuringiensis that can kill certain insects. Why the toxin produced by the bacterium is nontoxic to it?

Bt plants are genetically engineered insect resistant plants. b) Cite example for any two 'cry' genes which produce Bt toxin.

Bt cotton is a well known example of application of Biotechnology in Agriculture. Bt cotton reduces the use of pesticides. Explain.