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

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

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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
these proteins trigger the production of other antimicrobial defenses
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

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