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SlideshowReport

Using the Ti plasmid to make a transgenic plant

Description
A Ti plasmid carrying a foreign gene is inserted into an Agrobacterium tumefaciens bacterium.

B The bacterium infects a plant cell and transfers the Ti plasmid into it. The plasmid DNA becomes integrated into one of the cell’s chromosomes.

C The plant cell divides, and its descendants form an embryo. Several embryos are sprouting from this mass of cells.

D Each embryo develops into a transgenic plant that expresses the foreign gene. The glowing tobacco plant is expressing a gene from fireflies.
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