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Biology
Armando Gilbert
20 July, 09:42
Drug-resistant populations of microbes arise when
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Mauricio
20 July, 12:38
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There is variation within the population, due to a mutation. The selection pressure is the drug. The microbes that have the advantageous gene which makes them resistant to the drug are selected for, and reproduce passing on the gene, increasing its allele frequency within the population over time. However, the microbes that do not have the advantageous gene, cannot survive and their number decreases within the popullation.
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