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Biology, 23.11.2019 05:31 shouyuanroh8462
Aresearcher has a petri dish containing several species of bacteria, but no viruses. she notices that the population of e. coli in her petri dish has no antibiotic resistance. two weeks later, she reassesses the bacteria and finds that the e. coli have acquired antibiotic resistance. how could this have happened?
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