Gene Transfer in Plants
Microprojectile method of gene transfer in plants involves delivery of DNA

with the help of micromanipulator
with the help of needles
any of the above
with the help of bolistics

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Gene Transfer in Plants
Crown gall tissue

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

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