Transgenic Plant
Which cell-based plant technology involves the combining of two cells without cell walls from different species?

Cybridization
Protoplast fusion
Mutant selection
Clonal propagation

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Transgenic Plant
Which of the following has been widely used to provide resistance against plant viruses?

Virus resistance genes from bacteria
Expression of virus coat protein genes in transgenic plants
Expression of ribonuclease (RNase) genes in host plants
Expression of anti-virus genes in vectors that transmit viruses

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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
expressing the protein that activates expression of these genes all the time in plants
cooling plants using the Peltier effect
increasing evaporative cooling from leaf surfaces

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