Gene Transfer in Plants
Virulence trait of Agrobacterium tumefaciens is borne on

cryptic plasmid DNA
chromosomal DNA
both chromosomal and plasmid DNA
tumour inducing plasmid DNA

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

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

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Gene Transfer in Plants
Virulent strains of Agrobacterium contain large Ti-plasmids, which are responsible for the DNA transfer and subsequent disease symptoms. It has been shown that Ti-plasmids contain

four sets of sequence necessary for gene transfer
one set of sequence necessary for gene transfer
three sets of sequence necessary for gene transfer
two sets of sequence necessary for gene transfer

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