Multiple Choice
Which of the following statements about prokaryotic reproduction and genetic recombination is true?
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5. Genetics of Bacteria and Viruses
Bacterial Conjugation
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Which mechanism of horizontal gene transfer in bacteria involves the direct transfer of DNA from one cell to another through a pilus?
A
Transformation
B
Conjugation
C
Transduction
D
Binary fission
Verified step by step guidance1
Understand that horizontal gene transfer in bacteria refers to the movement of genetic material between bacterial cells, not through inheritance from parent to offspring.
Review the three main mechanisms of horizontal gene transfer: transformation, transduction, and conjugation.
Recall that transformation involves uptake of free DNA from the environment, and transduction involves transfer of DNA via bacteriophages (viruses that infect bacteria).
Focus on conjugation, which is characterized by the direct transfer of DNA from one bacterial cell to another through a specialized structure called a pilus.
Conclude that the mechanism involving direct DNA transfer through a pilus is conjugation.
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