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Gene Transfer in Plants

Gene Transfer in Plants
T-DNA transfer and processing into plant genome requires products of which of the following genes?

vir A,B
vir D,E
vir G,C
All of these

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

30 bp
12 bp
20 bp
25 bp

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Gene Transfer in Plants
Integrated nopaline T-DNA occurs as

single segment
four segments
three segments
two segments

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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 replicate in Agrobacterium
These can't replicate in Agrobacterium
All of these

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

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

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

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

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