Transgenic Plant
Which of the agricultural challenges below cannot be solved with transgenic techniques?

Crops are damaged by frost
Public preference for organic vegetables
Crops are killed by a virus
Public concern about safety of synthetic pesticides

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

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