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Gene Transfer in Plants

Gene Transfer in Plants
Direct DNA uptake by protoplasts can be stimulated by

all of these
luciferin
polyethylene glycol (PEG)
decanal

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Gene Transfer in Plants
Which of the following is true about Agrobacterium tumefaciens?

It infects gymosperms
It causes crown gall disease of plants
All of these
It infects dicotyledonous angiosperms

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Gene Transfer in Plants
The direct repeats flanking the T-DNA of Agrobacterium tume-faciens are known as

border sequences
cos site
transfer sequences
flanking sequences

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

agropine
all of these
octopine
nopaline

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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
Virulence trait of Agrobacterium tumefaciens is borne on

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

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