Assertion: Crops expressing cry genes are resistant to insects.
Reason: Cry gene encodes Bt toxin that is toxic to a group of insects.
Reason: Cry gene encodes Bt toxin that is toxic to a group of insects.
Answer & explanation
Correct answer: option 1
Bt stands for Bacillus thuringiensis(bacterium). This bacteria produce toxins encoded by Cry gene that kill certain insects. The Cry gene for this toxin has been cloned from bacteria and been expressed in plants to provide resistance to insects