mutations followed by enviromental selection (natural selection)
How do variations arise in bacteria considering they reproduce mostly by asexual means?
Genetic mutations.
Reply:Mutation, Transformation, Conjugation and/or Transduction!
Reply:A good question. Genetic mutations caused by DNA damage due to natural background radiation and free radicals. Also, antibiotic-resistant bacteria are caused by natural selection favouring those that survive exposure to man-made antibiotics.
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