Transgenic Plant
Starch content of potatoes can be increased by using a bacterial gene, known as

sucrose phosphate synthase gene
polygalactouranase gene
ADP glucose pyrophosphorylase gene
None of these

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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

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

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