Bacillus thuringiensis (Bt) strains have been used for designing novel:

Step-by-step solution

Bacillus thuringiensis producte endotoxin (Cry proteins) during the stationary phase of its growth cycle which when ingested and released in the gut of the larvae of insect pest, disrupts the insect gut lining thereby killing earthen. In this way, it act as a bioinsecticide. Related Theory Scientists identify and isolate the gene that produces the lethal protein. The gene is removed from the bacterium and a gene conferring resistance to a chemical (usually antibiotic or herbicide) is attached that will prove useful