BI-1484
Antibiotic resistance
Biology · Secondary 4 · Medium · Antibiotic resistance
A farmer sprays antibiotics into a fish pond for many months to prevent disease. After some time, most bacteria in the pond are resistant to the antibiotic. Which process best explains this change?
- Natural selection of bacteria with resistance alleles.
- Bacteria learning to avoid the antibiotic.
- The antibiotic mutating all bacteria into a new species.
- Continuous variation caused directly by the antibiotic.
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