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Given below are four statements related to Agrobacterium-mediated transfer of T-DNA into plant cells: A. Production of single-stranded T-DNA by VirD1 and VirD2 proteins. B. Interaction of VirE2 with VIP1 […]

Agrobacterium tumefaciens, also known as natural genetic engineers, causes crown-gall disease in plants. However, when the same bacteria are used to raise transgenic plants with improved agronomic traits, no such […]

Following are some statements related to raising transgenic plants A. T-DNA of Agrobacterium contains oncogenes and opine synthesis genes B. All 8 operons present in vir region of Agrobacterium is […]

While designing an experiment for Agrobacterium mediated plant transformation, a student noted down the following points: A. Ti and Ri plasmids induce crown gall and hairy root disease, respectively B. […]

Following are certain statements regarding the use of Agrobacterium in plant transformation. A. A. tumefaciens causes crown gall disease and A. rhizogenes causes hairy root disease. B. Region A in […]

Which one of the following statements is correct? (1) None of the virulence genes of Agrobacterium tumefaciens are expressed constitutively. (2) Integration of T-DNA with the nuclear genome of plant […]

Agrobacterium tumefaciens is frequently used as a vector to create transgenic plants. Under laboratory conditions Agrobacterium – mediated plant transformation does not require (1) host plant genes (2) bacterial type […]

The T-DNA region of the Ti plasmid of Agrobacterium tumefaciens harbors two genes: X and Y. Mutation of gene ‘X’ produces a rooty tumour while mutation of gene ‘Y’ produces […]

A set of virulence genes (vir genes), located in the Agrobacterium Ti-plasmid, is activated by (1) octopine                         (2) nopaline […]