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Adaptation and Selection

Genetic variation in bacteria

Throught he process of natural selection, organisms adapt, increasing long-term reproductive
success of the species by helping its members survive long enough to breed.

One of the most diverse and adaptable group of organisms is bacteria. Their adaptation to a
changing environment can…

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Shortly after the discovery of antibiotics it was discovered that some populations of bacteria had
developed resistance to antibiotics such as penicillin. The resistance was not due to a build-up of
tolerance to the antibiotic, but a chance mutation within the bacteria which resulted in certain
bacteria being able to…


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