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Gene Transfer in Plants

Gene Transfer in Plants
Vir genes required for the T-DNA transfer and processing are located

on the T-DNA
none of these
on the plant genome
outside the T-DNA region

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Gene Transfer in Plants
On Ti-plasmid T-region or T-DNA is flanked by a direct repeat of

12 bp
25 bp
30 bp
20 bp

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Gene Transfer in Plants
Intermediate vectors containing T-DNA are conjugation deficient. Thus conjugation is mediated in presence of which of the following plasmid?

either (a) or (b)
pRK 2013
pRN 3
none of these

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

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Gene Transfer in Plants
Opines that are present in crown gall tumour include

all of these
octopine
nopaline
agropine

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

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

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