Gene Transfer in Plants
Crown gall tissue

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

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Gene Transfer in Plants
Which of the following is true about T DNA?

Integration of T DNA occurs at two specific sites in the plant nuclear DNA
Integration of T DNA occurs only at one specific sites in the plant nuclear DNA
Integration of T DNA occurs at one site that may be random in the plant nuclear DNA
Integration of T DNA can occur at many different, apparently random, sites in the plant nuclear DNA

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