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WAHuman BiologyQuick questions
Unit 3: Homeostasis and Disease
Quick questions on Immunisation and disease control: WACE Year 12 Human Biology Unit 3
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What is antibiotic resistance?Show answer
Antibiotic resistance is a clear example of natural selection. Within a bacterial population there is variation, and by chance a few bacteria carry an allele that makes them resistant to an antibiotic. When the antibiotic is used, non-resistant bacteria die but resistant ones survive (differential survival). The survivors reproduce and pass on the resistance allele, so the proportion of resistant bacteria increases over generations.
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