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Genetic information is copied and passed on to daughter cells: WJEC A‑Level Biology questions

Every WJEC A-Level Biology exam question on 1.6 Genetic information is copied and passed on to daughter cells, 2016–2025, with its mark scheme and examiner’s report.

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1,223 questions

  1. Q5(a)(ii)

    Summer 2025 · Unit 4

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2025 Unit 4, question 5(a)(ii): Mature red blood cells cannot reproduce, so cannot be cultured in a laboratory. Explain why mature red blood cells cannot reproduce. [2]

  2. Q1(a)(i)

    Summer 2025 · AS Unit 1

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2025 AS Unit 1, question 1(a)(i): The cell labelled D is at interphase of the cell cycle. State two events that occur during this stage. [2] I. . . . . . . . . . . . . . . . . . . . . . . . . .

  3. Q1(a)(ii)

    Summer 2025 · AS Unit 1

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2025 AS Unit 1, question 1(a)(ii): Use letters (A-F) from Image 1.1 to identify one cell in each of the following stages of mitosis. [2] Telophase: . . . . . . . . . . . . . . . . . . . . . . . P

  4. Q1(a)(iii)

    Summer 2025 · AS Unit 1

    1 mark1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2025 AS Unit 1, question 1(a)(iii): Starting with the letter D, place the letters from Image 1.1 in the correct order during the cell cycle. [1] D . . . . . . . . . . . . . . . . . . . . . . . . .

  5. Q1(b)

    Summer 2025 · AS Unit 1

    3 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2025 AS Unit 1, question 1(b): Describe three differences between the processes of mitosis and meiosis. [3] Mitosis Meiosis …… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  6. Q1(c)(i)

    Summer 2025 · AS Unit 1

    1 mark1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2025 AS Unit 1, question 1(c)(i): State the type of cell division involved in producing the gametes in bracken. [1] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  7. Q1(c)(ii)

    Summer 2025 · AS Unit 1

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2025 AS Unit 1, question 1(c)(ii): State the number of chromosomes that would be found inside each cell of the sporophyte and the gametophyte in this species of bracken. [2] Sporophyte: . . . . .

  8. Q6(a)(i)

    Summer 2024 · AS Unit 1

    1 mark1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2024 AS Unit 1, question 6(a)(i): On Image 6.1, name the origin of the spindle fibres, labelled X. [1]

  9. Q6(a)(ii)

    Summer 2024 · AS Unit 1

    4 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2024 AS Unit 1, question 6(a)(ii): I. Name the stage of mitosis shown in Image 6.1. Explain your reasoning. [2] II. In the space below draw a labelled diagram of one chromosome as it would appear

  10. Q6(b)(ii)

    Summer 2024 · AS Unit 1

    3 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2024 AS Unit 1, question 6(b)(ii): Colchicine is a chemical which prevents the polymerisation of tubulin to form microtubules. Suggest how this would affect the growth of organisms. Explain your

  11. Q6(c)

    Summer 2024 · AS Unit 1

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2024 AS Unit 1, question 6(c): When bacteria reproduce, they undergo a process called binary fission. This is shown in Image 6.3. Image 6.3 Use Image 6.3 and your knowledge of eukaryotic cell

  12. Q2(a)(i)

    Summer 2023 · AS Unit 1

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2023 AS Unit 1, question 2(a)(i): Insert the correct letter (A, B or C) into the table to indicate which stage of cell division is represented by each cell. [2] Metaphase of: Letter Mitosis Meio

  13. Q2(a)(ii)

    Summer 2023 · AS Unit 1

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2023 AS Unit 1, question 2(a)(ii): State two differences in the daughter cells of Culex pipiens following mitosis and meiosis. [2] Difference Mitosis Meiosis 1 2.

  14. Q2(b)(i)

    Summer 2023 · AS Unit 1

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2023 AS Unit 1, question 2(b)(i): Calculate the rate of increase in distance between the centromeres of the sister chromatids between 15 and 30 minutes. [2] Rate = μm minute–1

  15. Q2(b)(ii)

    Summer 2023 · AS Unit 1

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2023 AS Unit 1, question 2(b)(ii): Suggest how Graph 2.2 provides evidence to show what happens to the chromosomes during anaphase of mitosis. [2]

  16. Q2(c)(i)

    Summer 2023 · AS Unit 1

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2023 AS Unit 1, question 2(c)(i): Use the scale bar to calculate the magnification of Image 2.3. [2] Magnification = ×

  17. Q2(c)(ii)

    Summer 2023 · AS Unit 1

    1 mark1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2023 AS Unit 1, question 2(c)(ii): On Image 2.3 label: [1] A one cell in anaphase B one cell in metaphase

  18. Q2(c)(iii)

    Summer 2023 · AS Unit 1

    2 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2023 AS Unit 1, question 2(c)(iii): Suggest from which part of the onion plant the cells in Image 2.3 were taken. Explain your answer. [2]

  19. Q7

    Summer 2022 · AS Unit 1

    9 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2022 AS Unit 1, question 7: A eukaryotic cell cycle is represented in the Image 7.1. Image 7.1 The cell cycle When looking at a group of cells under the microscope, cells undergoing mitosi

  20. Q4(a)(i)

    Summer 2019 · Unit 4

    3 marks1.6 Genetic information is copied and passed on to daughter cells
    The whole paper ↗
    Summer 2019 Unit 4, question 4(a)(i): Proto-oncogene
All 37 questions on Genetic information is copied and passed on to daughter cells, as a list
  1. Summer 2025, Unit 4, Q5(a)(ii) (2 marks): Mature red blood cells cannot reproduce, so cannot be cultured in a laboratory. Explain why mature red blood cells cannot reproduce. [2]
  2. Summer 2025, AS Unit 1, Q1(a)(i) (2 marks): The cell labelled D is at interphase of the cell cycle. State two events that occur during this stage. [2] I. . . . . . . . . . . . . . . . . . . . . . . . . .
  3. Summer 2025, AS Unit 1, Q1(a)(ii) (2 marks): Use letters (A-F) from Image 1.1 to identify one cell in each of the following stages of mitosis. [2] Telophase: . . . . . . . . . . . . . . . . . . . . . . . P
  4. Summer 2025, AS Unit 1, Q1(a)(iii) (1 mark): Starting with the letter D, place the letters from Image 1.1 in the correct order during the cell cycle. [1] D . . . . . . . . . . . . . . . . . . . . . . . . .
  5. Summer 2025, AS Unit 1, Q1(b) (3 marks): Describe three differences between the processes of mitosis and meiosis. [3] Mitosis Meiosis …… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  6. Summer 2025, AS Unit 1, Q1(c)(i) (1 mark): State the type of cell division involved in producing the gametes in bracken. [1] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  7. Summer 2025, AS Unit 1, Q1(c)(ii) (2 marks): State the number of chromosomes that would be found inside each cell of the sporophyte and the gametophyte in this species of bracken. [2] Sporophyte: . . . . .
  8. Summer 2024, AS Unit 1, Q6(a)(i) (1 mark): On Image 6.1, name the origin of the spindle fibres, labelled X. [1]
  9. Summer 2024, AS Unit 1, Q6(a)(ii) (4 marks): I. Name the stage of mitosis shown in Image 6.1. Explain your reasoning. [2] II. In the space below draw a labelled diagram of one chromosome as it would appear
  10. Summer 2024, AS Unit 1, Q6(b)(ii) (3 marks): Colchicine is a chemical which prevents the polymerisation of tubulin to form microtubules. Suggest how this would affect the growth of organisms. Explain your
  11. Summer 2024, AS Unit 1, Q6(c) (2 marks): When bacteria reproduce, they undergo a process called binary fission. This is shown in Image 6.3. Image 6.3 Use Image 6.3 and your knowledge of eukaryotic cell
  12. Summer 2023, AS Unit 1, Q2(a)(i) (2 marks): Insert the correct letter (A, B or C) into the table to indicate which stage of cell division is represented by each cell. [2] Metaphase of: Letter Mitosis Meio
  13. Summer 2023, AS Unit 1, Q2(a)(ii) (2 marks): State two differences in the daughter cells of Culex pipiens following mitosis and meiosis. [2] Difference Mitosis Meiosis 1 2.
  14. Summer 2023, AS Unit 1, Q2(b)(i) (2 marks): Calculate the rate of increase in distance between the centromeres of the sister chromatids between 15 and 30 minutes. [2] Rate = μm minute–1
  15. Summer 2023, AS Unit 1, Q2(b)(ii) (2 marks): Suggest how Graph 2.2 provides evidence to show what happens to the chromosomes during anaphase of mitosis. [2]
  16. Summer 2023, AS Unit 1, Q2(c)(i) (2 marks): Use the scale bar to calculate the magnification of Image 2.3. [2] Magnification = ×
  17. Summer 2023, AS Unit 1, Q2(c)(ii) (1 mark): On Image 2.3 label: [1] A one cell in anaphase B one cell in metaphase
  18. Summer 2023, AS Unit 1, Q2(c)(iii) (2 marks): Suggest from which part of the onion plant the cells in Image 2.3 were taken. Explain your answer. [2]
  19. Summer 2022, AS Unit 1, Q7 (9 marks): A eukaryotic cell cycle is represented in the Image 7.1. Image 7.1 The cell cycle When looking at a group of cells under the microscope, cells undergoing mitosi
  20. Summer 2019, Unit 4, Q4(a)(i) (3 marks): Proto-oncogene
  21. Summer 2019, Unit 4, Q4(a)(iii): Stem cell
  22. Summer 2019, AS Unit 1, Q1(a)(i) (1 mark): State the haploid number of chromosomes in this species. [1]
  23. Summer 2019, AS Unit 1, Q1(a)(ii) (1 mark): State the evidence from the diagram that the cell is undergoing mitosis and not meiosis. [1]
  24. Summer 2019, AS Unit 1, Q1(a)(iii) (1 mark): When the tissues from the plant were removed they were stained before being viewed under the microscope. Explain how this makes the chromosomes visible. [1]
  25. Summer 2019, AS Unit 1, Q1(b)(i) (1 mark): State which organ of the plant could have been used to obtain the photomicrographs above. [1]
  26. Summer 2019, AS Unit 1, Q1(b)(ii) (1 mark): Place the photomicrographs in the correct order. Some letters have been done for you. [1] C A F D
  27. Summer 2019, AS Unit 1, Q1(b)(iii) (2 marks): Use your knowledge of cell division to describe two differences between the stages labelled E and F. [2]
  28. Summer 2019, AS Unit 1, Q1(b)(iv) (3 marks): With reference to photomicrographs B and G, state how meiosis contributes to genetic variation in the species and explain why this is important. [3]
  29. Summer 2018, AS Unit 1, Q3(a) (2 marks): Identify the cells that belong to this species of spider mite. [2]
  30. Summer 2018, AS Unit 1, Q3(b)(i) (2 marks): Complete the diagram to state which stages are haploid or diploid. [2]
  31. Summer 2018, AS Unit 1, Q3(b)(ii) (2 marks): What conclusions can be made about the formation of male and female gametes in spider mites? [2]
  32. Summer 2018, AS Unit 1, Q3(c)(i) (3 marks): A sample of tissue from the leg muscle of a young spider mite was analysed. The mass of DNA in some of the cells was 6.8 arbitrary units (au), whilst in other c
  33. Summer 2018, AS Unit 1, Q3(c)(ii) (2 marks): The table below shows the percentage of cells, with either 3.4 au or 6.8 au of DNA, in the leg muscle of a young spider mite and an older spider mite. Percentag
  34. Summer 2017, AS Unit 1, Q7 (9 marks): Cells can be grown under laboratory conditions and used in the development of drugs to treat cancer. The graph below shows a model of the general changes in cel
  35. Summer 2016, AS Unit 1, Q1(a)(i) (2 marks): Name the stages shown in A and B. [2] Stage A: Stage B:
  36. Summer 2016, AS Unit 1, Q1(a)(ii) (1 mark): Name the structures, labelled X, that can be seen in the photomicrograph. [1]
  37. Summer 2016, AS Unit 1, Q1(b) (3 marks): A biotechnology company that supplies HeLa cells to laboratories states that the number of HeLa cells double every 19 hours. They suggest that the starting cult

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