Question

Name the source and types of cry genes isolated from it for incorporation into crops by biotechnologies. Explain how have these genes brought beneficial change in the genetically modified crops ?

Answer 1

Bacillus thuringiensis is the source of cry gene. Types of crygenes isolated from it. cryIAc, uyIIAb, cryIAb. 

These genes act as biopesticides when introduced. They produce toxic insecticidal protein which, when activated cause death of the insects.