Zoology - Biotechnology and Its Applications Question with Solution | TestHub

B. thuringiensisforms protein crystals that contain insecticidal proteins during a particular phase of their growth.

The proteins encoded by the genes cryIAc and cryIIAb control the cotton bollworms, that of cryIAb controls corn borer.

Bacillus thuringiensisproduce proteins that kill certain insects such as lepidopterans (flies, mosquitoes), coleopterans (beetles) and dipterans (tobacco budworm, armyworm).

The activated toxin binds to the surface of midgut epithelial cells and creates pores.