Transgenic Plant
A naturally occurring variant, possessing characteristics of interest, is identified. This plant is selectively bred. This is an example of

mutant selection
transgenic technology
none of these
traditional plant breeding

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Transgenic Plant
Transgenic plants

contain foreign genes in their cells
are used to produce human antibodies
both (a) and (b)
are plants that differ in geographical locations

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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

these provide no protection at all against pathogens
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

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