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Biotechnology and its Applications

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  1. Some of the characteristics of Bt cotton are:
    1. long fibre and resistance to aphids
    2. medium yield, long fibre and resistance to beetle pests
    3. high yield and production of toxic protein crystals which kill dipteran pests
    4. high yield and resistance to boll worms
Correct Option: D

Bt toxin genes were isolated from Bacillus thuringiensis and incorporated into cotton plant to form a genetically modified crop called Bt cotton. Bt cotton has high yield and resistance to bollworms.


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