Gene Transfer in Plants
Crown gall tissue

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

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

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

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