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Gene Transfer in Plants

Gene Transfer in Plants
Agrobacterium tumefaciens is a

a yeast
a fungi
gram (-) bacteria
gram (+) bacteria

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Gene Transfer in Plants
The left segment of octopine T-DNA (TL) is necessary for

enzymes for agropine biosynthesis
tumour formation
conjugative transfer
all of these

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Gene Transfer in Plants
Which of the following is not true about the direct repeats flanking T-DNA?

They are conserved between nopaline and octopine Ti-plasmids
These are important in integration mechanism
All of these
These repeats are transferred intact to the plant genome

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

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

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Gene Transfer in Plants
The transfer of intermediate vectors into Agrobacterium are brought about by

triparental mating
transformation
biparental mating
transduction

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Gene Transfer in Plants
Which of the following plant signal molecules regulate the expression of vir B, C, D and E in case of tobacco?

α-hydroxy syringone
None of these
Both (a) and (b)
Acetosyringone

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