Gene Transfer in Plants
Crown gall tissue

can be cultivated in vitro in absence of bacteria
retains tumorous properties when cultivated
both (a) and (b)
shows tumorous properties only in presence of bacteria

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Gene Transfer in Plants
Advantage of microprojectile method over microinjection method for gene transfer in plants include

All of these
gene can be transferred to many cells simultaneously
intact cells are used
method is universal in its application irrespective of all shape, size, type and presence or absence of cell wall

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