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An experiment was conducted to examine the effect of ultraviolet radiation on the development of antibiotic resistance in a strain of bacteria - HSC - SSCE Biology - Question 5 - 2002 - Paper 1
Question 5
An experiment was conducted to examine the effect of ultraviolet radiation on the development of antibiotic resistance in a strain of bacteria. The table summarises ... show full transcript
Worked Solution & Example Answer:An experiment was conducted to examine the effect of ultraviolet radiation on the development of antibiotic resistance in a strain of bacteria - HSC - SSCE Biology - Question 5 - 2002 - Paper 1
Step 1
Which of the following statements best summarises the stages in the development of the new strain of bacteria that was resistant to antibiotic S?
Answer
To understand the development of antibiotic resistance in the strain of bacteria, we analyze the steps involved:
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Mutation: The initial step involves mutations occurring in the bacterial DNA. These mutations can lead to changes that may give some bacteria resistance to specific antibiotics.
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Natural Selection: After the mutations happen, the next step is natural selection. Antibiotic S is applied, and bacteria that are resistant will survive and reproduce, while those that are not resistant will die off.
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Replication: Finally, the resistant bacteria replicate, spreading the resistant traits throughout the population.
Based on these stages, the correct option is (C) Mutation → Natural Selection → Replication.