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Extraction of Genomic DNA

Insect resist...

Question

Insect resistance transgenic cotton has been produced by inserting a piece of DNA from

A

A wild relative of cotton

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B

A bacterium

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C

A virus

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D

An insect

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Solution

The correct option is B
A bacterium

The gene (cry gene) responsible for the production of toxin (Bt toxin) has been isolated from Bacillus thuringiensis and introduced into a new number of crop plants using Agrobacterium Ti plasmid mediated transformation. The new genetically modified Bt cotton is resistant to the bollworm complex.

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Q. Insect-resistance transgenic cotton has been produced by inserting a piece of DNA from:

Q. Assertion :Insect resistant transgenic cotton has been produced by inserting Bt gene. Reason: The Bt gene is derived from a bacterium.

Q. Assertion (A): Insect resistant transgenic cotton has been produced by inserting Bt gene.
Reason (R): The Bt gene is derived from a bacterium Bacillus thuringiensis.

Q. The American multinational company, Monsanto, has produced an insect-resistant cotton variety. A toxin gene from which one of the following bacteria has been transferred to this transgenic cotton?

Q. Silencing of mRNA has been used in producing transgenic plants resistant to _____________.

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