Bacteria can become resistant to an antibiotic over time. Which statement explains this?
Answer and explanation
Correct answer: D. Resistant bacteria survive, reproduce and pass on the allele
- Step 1: The antibiotic selects for resistant bacteria, which then multiply.
Answer
Resistant bacteria survive, reproduce and pass on the allele.
Why not the others: Bacteria choose to develop resistance when exposed to the drug: evolution is not deliberate. The antibiotic causes the specific mutation for resistance: the resistance mutation arises randomly before exposure. All bacteria in a population become resistant at once: only some bacteria are resistant at first.
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