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Practice question

MCQ

Question

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 tumor (disease) is observed. This is due to: A. Vir D2 gene is mutated in Ti plasmid. B. Disarmed Ti plasmid is generally used. C. Heat-shock during transformation destroys virulence. D. Oncogenes have been removed. Which one of the following combination of above statements is correct?

Options

Choose one · Correct answer highlighted

Explanation

Analysis of agrobacterium tumefaciens, also known as natural genetic shows B 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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