Gene Transfer in Plants
Which of the following genes are constitutively expressed and control the plant induced activation of other vir genes?

vir A and vir G
vir B and vir E
vir A and vir B
vir C and vir D

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Gene Transfer in Plants
In a plant tumour cell

may vary from plant to plant
different parts of the Ti-plasmid are incorporated
only a small specific segment of callus T DNA is incorporated
complete Ti plasmid is incorporated in plant nuclear DNA

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