Bacterial resistance to penicillin began to appear ____.
A) several decades after its first use
B) 100 years after its first use
C) after the drug was developed from synthetic sources
D) during the AIDS outbreak in the 1980s
E) within a few years of its introduction into general use
Correct Answer:
Verified
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Q12: The development of penicillin-resistant bacteria represents an
Q13: Most new alleles probably arise from _.
A)
Q14: In the 1960s, evolutionary biologists identified protein
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