Gene Transfer In Plants

Which of the following is true about T DNA?

A:

Integration of T DNA can occur at many different, apparently random, sites in the plant nuclear DNA

B:

Integration of T DNA occurs only at one specific sites in the plant nuclear DNA

C:

Integration of T DNA occurs at two specific sites in the plant nuclear DNA

D:

Integration of T DNA occurs at one site that may be random in the plant nuclear DNA

Answer: A

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

A:

pRK 2013

B:

pRN 3

C:

either (a) or (b)

D:

none of these

Answer: C

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Opines that are present in crown gall tumour include

A:

octopine

B:

nopaline

C:

agropine

D:

all of these

Answer: D

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Which of the following plant signal molecules regulate the expression of vir B, C, D and E in case of tobacco?

A:

Acetosyringone

B:

α-hydroxy syringone

C:

Both (a) and (b)

D:

None of these

Answer: C

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Liposomes mediated gene transfer in plants involves

A:

plasmid DNA enclosed in a lipid bag

B:

fusion of liposomes with protoplast

C:

use of polyethylene glycol (PEG)

D:

all of the above

Answer: D

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Questions for: Gene Transfer In Plants