Transgenic Plant
The first field tests were conducted with which of the following genetically altered organism?

Strawberry seedlings sprayed with ice-minus bacteria
Vaccinia virus containing a gene from the rabies virus
bt Corn
The flavrsavr tomato

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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

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

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Transgenic Plant
Low temperatures induce the expression of many cold-induced genes. Transgenic plants with improved cold tolerance have been produced by

expressing a gene for production of antifreeze (ethylene glycol) in plants
cooling plants using the Peltier effect
expressing the protein that activates expression of these genes all the time in plants
increasing evaporative cooling from leaf surfaces

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

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
inoculating the susceptible strain with genes of nucleocapsid
any of the above

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