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      Question

      In bacteria, which of the following mechanisms primarily

      contributes to genetic variation?
      A Binary fission Correct Answer Incorrect Answer
      B Chemotaxis Correct Answer Incorrect Answer
      C Osmotic lysis Correct Answer Incorrect Answer
      D Conjugation Correct Answer Incorrect Answer

      Solution

      Bacterial conjugation involves the direct transfer of DNA (usually plasmids) between bacteria through a pilus, promoting genetic diversity. Key Points: • Involves F plasmids and sex pili. • Increases antibiotic resistance spread.

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