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How is Bt cotton made to attain resistance against bollworm ?
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How is Bt cotton made to attain resistance against bollworm ?

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Oswaal CBSE Question Bank Class 12 Biology Chapterwise and Topicwise (Oswaal)

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(i) Specific Bt toxin genes were isolated from Bacillus thuringiensis and incorporated into the several crop plants such as cotton. The choice of genes depends upon the crop and the targeted pest, as most Bt toxins are insect-group specific.
(ii) The toxin is coded by a gene named cry. There are a number of them for example, the proteins encoded by the genes cryIAc and cryIIAb control the cotton ballworms and that of cryIAb controls corn borer.
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Name the organism from which the ‘cry‘ genes are isolated. Mention with the help of suitable example why and how bio-technologists have made use of ‘cry‘ genes ?
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Question Text
How is Bt cotton made to attain resistance against bollworm ?
TopicBiotechnology and its Applications
SubjectBiology
ClassClass 12
Answer TypeText solution:1
Upvotes101