Transgenic Plant
If the goal were to create a plant resistant to an insecticide, which cell-based plant technology would be most effective?

Cybridization
Clonal propagation
Protoplast fusion
Mutant selection

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

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