Transgenic Plant
Phosphinothricin acetyl transferase is encoded by

bar gene in Streptomyces spp
both (a) and (b)
gene bxn in Klebsiella pneumoniae
none 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
any of the above
inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain

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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

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

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