Answer :
Antibiotic resistant bacteria are more fit for an environment where antibiotics are used frequently.
The ability to resist antibiotics may cause bacteria to be less fit in other environments where antibiotics are not present.Bacteria that are sensitive to antibiotics have a reproductive advantage in all environments.These different types of evolution includes are divergent, coevolution, parallel evolution, and convergent evolution.MRSA is one of the most common antibiotic resistant bacteria.Symptoms of MRSA infection often begin as small red bumps on the skin that can progress to deep, painful abscesses or boils, which are pus filled masses under the skin.Non resistant bacteria multiply, and upon drug treatment, the bacteria die. Drug resistant bacteria multiply as well, but upon drug treatment, the bacteria continue to spread.
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