Question

A researcher is studying a specific strain of bacteria. In one of her cultures, she notices that the bacteria are antibiotic-resistant. As there are no genes in the chromosome that could confer antibiotic-resistance in these bacteria, the researcher assumes this is the result of a spontaneous mutation. What is another possible explanation?

Answer 1

Answer:

the plasmids contain a gene conferring antibiotic resistance

Explanation:

Based on the information provided within the question another possible explanation is that the plasmids contain a gene conferring antibiotic resistance. Most plasmids are designed to include this, which in term allows bacteria to grow within them or on top of media containing that specific antibiotic. Therefore this could be another possible explanation in this situation.

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