Practice question
Question
student noted the following points regarding Agrobacterium tumefaciens: A. tumefaciens is a gram-negative soil bacterium. B. Opine catabolism genes are present in T- DNA region of Ti-plasmid. C. Opines are synthesized by condensation of amino acids and alpha -ketoacids or amino acids and sugars. D. A callus culture of crown gall tissue caused by A. tumefaciens in plants can be multiplied without adding phytohormones. Which one of the combinations of above statements is correct?
Explanation
Analysis of student noted the following points regarding agrobacterium shows A, C and D represents established outcome. functional assays supports option D, whereas distractors confuse substrate or regulatory direction and fail to reproduce observed results.
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