New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    How does the Refugia Technique prevent the development

    of resistance in bollworms against Bt cotton?
    A By planting non-Bt crops in the entire field Correct Answer Incorrect Answer
    B By using higher doses of Bt cotton seeds Correct Answer Incorrect Answer
    C By ensuring all insects in the field are Bt-resistant Correct Answer Incorrect Answer
    D By allowing mating between susceptible insects from non-Bt crops and resistant insects from Bt cotton Correct Answer Incorrect Answer

    Solution

    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 doesn't express itself in F1 generations.

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