1. Bacterial Genetics

Genetic variation in prokaryotes

Key points:

  • In transformation, a bacterium takes up a piece of DNA floating in its environment.
  • In transduction, DNA is accidentally moved from one bacterium to another by a virus.
  • In conjugation, DNA is transferred between bacteria through a tube between cells.
  • Transposable elements are chunks of DNA that “jump” from one place to another. They can move bacterial genes that give bacteria antibiotic resistance or make them disease-causing.

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