Question

How does the Refugia Technique prevent the development of resistance in bollworms against Bt cotton?

Q: Answer-How does the Refugia Technique prevent the development of resistance in bollworms against Bt cotton?

Explanation The Refugia Technique prevents resistance development by allowing mating between susceptible insects from non-Bt crops and resistant insects from Bt cotton. In the next generation F1, the progeny obtained is susceptible to Bt, as the recessive gene doesnt express itself in F1 generations.