A bacterial infection was effectively controlled by using a specific a – InterviewSolution

1.	A bacterial infection was effectively controlled by using a specific anitibiotic for a long time. But now a days this antibiotic is not found to be so effective to control the said infection.Give a scientific explanation for this phenomenon based on evolution.
Answer» Evidence for Natural selection and explanations like origin of antibiotic resistant varieties or elimination of sensitive varieties or Natural selection by Anthropo-genic action.

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