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The introduction of t-DNA into plants involves:

  1. A
    Allowing the plant roots to stand in water
  2. B
    Infection of the plant by Agrobacterium tumefaciens
  3. C
    Altering the pH of the soil, then heat shocking the plants
  4. D
    Exposing the plants to cold for a brief period

Solution & Step-by-step Explanation

Agrobacterium tumefaciens is a natural genetic engineer that can transfer a specific part of its plasmid DNA (called t-DNA) into the plant genome during infection.

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The introduction of t-DNA into plants involves:
A
Allowing the plant roots to stand in water
B
Infection of the plant by Agrobacterium tumefaciens
C
Altering the pH of the soil, then heat shocking the plants
D
Exposing the plants to cold for a brief period

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