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Gene Transfer in Plants

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

30 bp
25 bp
20 bp
12 bp

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

enzymes for agropine biosynthesis
tumour formation
conjugative transfer
all of these

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Gene Transfer in Plants
Which technique is used to introduce genes into dicots?

electroporation
microinjection
Ti plasmid infection
particle acceleration

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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
The direct repeats flanking the T-DNA of Agrobacterium tume-faciens are known as

transfer sequences
flanking sequences
cos site
border sequences

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

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

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