Which of the following statement is incorrect about Agrobacterium tumifaciens?
Held on 30 Apr 2023 · Verified 9 Jul 2026.
It transforms normal plant cells into tumorous cells.
It delivers 'T-DNA' into plant cell.
It is used to deliver gene of interest in both prokaryotic as well as eukaryotic host cells.
'Ti' plasmid from Agrobacterium tumifaciens used for gene transfer is not pathogenic to plant cells.
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The blue and white selectable markers have been developed which differentiate recombinant colonies from non-recombinant colonies on the basis of their ability to produce colour in the presence of a chromogenic substrate. Given below are two statements about this method: Statement I : The blue coloured colonies have DNA insert in the plasmid and they are identified as recombinant colonies. Statement II : The colonies without blue colour have DNA insert in the plasmid and are identified as recombinant colonies. In the light of the above statements, choose the most appropriate answer from the options given below:
 In the above represented plasmid, an alien piece of DNA is inserted at EcoRI site. Which of the following strategies will be chosen to select the recombinant colonies?
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