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How does the use of antibiotics result in the evolution of resistant stains of bacteria.

  • Science -

    I'm not sure about this. I do remember my teacher saying that if you use antibiotics too much, the bacteria will soon resist it and the antibiotic won't be as effective.

  • Science -

    When an antibiotic is used, some of the bacteria may be more able to survive it than others. The more-resistant bacteria survive to reproduce and pass their resistant genes to the next generation. The less-resistant bacteria don't get the chance to reproduce. Therefore, the resistant strain becomes more common.

    (Note: I'm not much of a biologist, so this may not be exactly right, but I'm pretty sure this is the basic idea.)

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