A Shigella flexneri isolate is found to carry a new gene encoding a type III secretion system effector protein. The gene was acquired via transduction. Which statement best describes the process by which this gene was acquired?

Question

A  Shigella flexneri  isolate is found to carry a new gene encoding a type III secretion system effector protein. The gene was acquired via transduction. Which statement best describes the process by which this gene was acquired?

Answer

The bacterium took up free DNA from the environment and incorporated it into its genome.

Answer

The bacterium received the gene through direct cell-to-cell contact via a conjugative pilus.

Answer

The gene was transferred from another bacterium by a virus (bacteriophage) during infection.

Answer

The bacterium acquired the gene through a spontaneous mutation during DNA replication.

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A Shigella flexneri isolate is found to carry a new gene encoding a type III s...

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