Ameliorate antibiotic resistance

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Question: To ameliorate antibiotic resistance, many individuals have lowered or eliminated the usage of certain antibiotics. Howerver this hasn't worked most of the time. One flase assumption of this approach has been that the expression of resistance genes comes at a fitness __blank__ when there are no antibiotics are present in the environment. Even when this assumption is correct ___blank___ mutations can offset any deleterious effects of resistance.

Reference no: EM1385729

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