AIIMS AIIMS Solved Paper-2008

  • question_answer
    Cultivation of Bt cotton has been much in the news. The prefix Bt means:

    A) Barium-treated cotton seeds

    B) Bigger thread variety of cotton with better tensile strength

    C)  produced by biotechnology using restriction enzymes and ligases

    D)  carrying an endotoxin gene from Bacillus thuringiensis

    Correct Answer: D

    Solution :

    Bt-cotton, Bt-tobacco, Bt-tomato etc are transgenic plants having Bt-2 gene encoding Bt toxin (eg, thuriosiue). Bt-ioxin gone has been isolated from a bacteria Bacillus thuringiensis therefor called Bt (ie, Bacillus thuringiensis). These plants are resistant fur more than 140 species of injects nduding common cabbage worm, tent caterpillars, Bag worms, Canker worms, gypsy worm etc.


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