Transgenic Plant
Which of the following gene is transferred to plants that detoxify the herbicide atrazine?

Phosphinothrium acetyl transferase
Nitrilase
Glutathione S-transferase (GST)
All of these

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Transgenic Plant
Cross protection against viruses in transgenic plants can be obtained by

inoculating the susceptible strain with genes of nucleocapsid
inoculating the susceptible strain with the coat proteins of virulent strain
inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
any of the above

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Transgenic Plant
In transgenic plants that have been manipulated to express patho-genesis-related (PR) proteins all the time it has been shown that

these provide no protection at all against pathogens
expression of two PR proteins provides some protection against a few pathogens
expression of one PR protein provides high levels of protection against many pathogens
these proteins trigger the production of other antimicrobial defenses

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