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Gene Transfer in Plants

Gene Transfer in Plants
The size of the virulent plasmid of Agrobacterium tumefaciens is

>235 kb
40-80 kb
140-235 kb
80-120 kb

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

conjugative transfer
all of these
enzymes for agropine biosynthesis
tumour formation

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Gene Transfer in Plants
Which of the following is not true about the helper plasmids?

These help in the mediating conjugation of intermediate vectors
These can't replicate in Agrobacterium
All of these
These can replicate in Agrobacterium

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Gene Transfer in Plants
In the liposome mediated gene transfer in plants, nucleic acids are

stable in liposomes
not stable in liposomes
protected from nuclease digestion
both (a) and (b)

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Gene Transfer in Plants
Opine synthesis is the property

conferred to plant cells when it transformed by Agrobacterium tumefaciens
of normal plant cells
determined by the bacteria Agrobacterium tumefaciens
both (a) and (b)

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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 C and vir D
vir A and vir B

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