Gene Transfer in Plants
Intermediate vectors containing T-DNA are conjugation deficient. Thus conjugation is mediated in presence of which of the following plasmid?

none of these
pRN 3
pRK 2013
either (a) or (b)

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Gene Transfer in Plants
Crown gall tissue

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

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