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Natural and artificial selection: CAIE A‑Level Biology questions

Every CAIE A-Level Biology exam question on 17.2 Natural and artificial selection, June 2024 and the specimen papers, with its mark scheme and examiner’s report.

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240 questions

  1. Q4(a)

    June 2024 · Paper 4

    4 marks17.2 Natural and artificial selection
    The whole paper ↗
    June 2024 Paper 4, question 4(a): North American P. leniusculus can carry the crayfish plague pathogen without showing symptoms because they have evolved resistance to it. Explain how P. leniusc

  2. Q7(a)(i)

    June 2024 · Paper 4

    1 mark17.2 Natural and artificial selection
    The whole paper ↗
    June 2024 Paper 4, question 7(a)(i): Describe the relationship shown in Table 7.1. [1]

  3. Q7(a)(ii)

    June 2024 · Paper 4

    3 marks17.2 Natural and artificial selection
    The whole paper ↗
    June 2024 Paper 4, question 7(a)(ii): Use Table 7.1 to explain how these species may differ in the rate at which they can adapt if environmental selection pressures change. [3]

  4. Q7(b)(i)

    June 2024 · Paper 4

    2 marks17.2 Natural and artificial selection19.3 Genetically modified organisms in agriculture
    The whole paper ↗
    June 2024 Paper 4, question 7(b)(i): Compare the timescales needed for selective breeding and genetic engineering to increase the frequency of a rare allele in cattle. Give a reason for your answer

  5. Q7(a)

    Specimen · Paper 4

    3 marks17.2 Natural and artificial selection
    The whole paper ↗
    Specimen Paper 4, question 7(a): Fig. 7.1 shows a red deer, Cervus elaphus. Red deer feed on a wide range of plants. Fig. 7.1 The number of red deer in the UK increased from 135 000 in 1960 to

  6. Q7(b)(i)

    Specimen · Paper 4

    1 mark17.2 Natural and artificial selection
    The whole paper ↗
    Specimen Paper 4, question 7(b)(i): Sketch a curve on Fig. 7.3 to show the pattern of variation of body mass in this red deer population after this time. number of red deer low medium high body ma

  7. Q7(b)(ii)

    Specimen · Paper 4

    1 mark17.2 Natural and artificial selection
    The whole paper ↗
    Specimen Paper 4, question 7(b)(ii): Name the type of force of natural selection that is acting on this population. [1]

  8. Q7(c)(i)

    Specimen · Paper 4

    1 mark17.2 Natural and artificial selection
    The whole paper ↗
    Specimen Paper 4, question 7(c)(i): Sketch a curve on Fig. 7.4 to show the pattern of variation of body mass in this red deer population after this time. number of red deer low medium high body ma

  9. Q7(c)(ii)

    Specimen · Paper 4

    1 mark17.2 Natural and artificial selection
    The whole paper ↗
    Specimen Paper 4, question 7(c)(ii): Name the type of force of natural selection that is acting on this population. [1] [Total: 7]
All 9 questions on Natural and artificial selection, as a list
  1. June 2024, Paper 4, Q4(a) (4 marks): North American P. leniusculus can carry the crayfish plague pathogen without showing symptoms because they have evolved resistance to it. Explain how P. leniusc
  2. June 2024, Paper 4, Q7(a)(i) (1 mark): Describe the relationship shown in Table 7.1. [1]
  3. June 2024, Paper 4, Q7(a)(ii) (3 marks): Use Table 7.1 to explain how these species may differ in the rate at which they can adapt if environmental selection pressures change. [3]
  4. June 2024, Paper 4, Q7(b)(i) (2 marks): Compare the timescales needed for selective breeding and genetic engineering to increase the frequency of a rare allele in cattle. Give a reason for your answer
  5. Specimen, Paper 4, Q7(a) (3 marks): Fig. 7.1 shows a red deer, Cervus elaphus. Red deer feed on a wide range of plants. Fig. 7.1 The number of red deer in the UK increased from 135 000 in 1960 to
  6. Specimen, Paper 4, Q7(b)(i) (1 mark): Sketch a curve on Fig. 7.3 to show the pattern of variation of body mass in this red deer population after this time. number of red deer low medium high body ma
  7. Specimen, Paper 4, Q7(b)(ii) (1 mark): Name the type of force of natural selection that is acting on this population. [1]
  8. Specimen, Paper 4, Q7(c)(i) (1 mark): Sketch a curve on Fig. 7.4 to show the pattern of variation of body mass in this red deer population after this time. number of red deer low medium high body ma
  9. Specimen, Paper 4, Q7(c)(ii) (1 mark): Name the type of force of natural selection that is acting on this population. [1] [Total: 7]

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