A population of bacteria is exposed to the antibiotic penicillin. Most of the bacteria die.
However, some bacteria in the population have an allele coding for an enzyme that breaks down penicillin. These bacteria are able to survive.
Which could explain how these bacterial cells acquired this allele?
1 An error during DNA replication.
2 An error during transcription.
3 An error during translation.
1 )
1, 2 and 3
2 )
1 and 3 only
1 only
4 )
2 and 3 only
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