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Count chromosomes after mitosis, meiosis and fertilisation

9th grade (Year 10 in England) · 16 questions · Common Core: NGSS.HS-LS1-4, NGSS.HS-LS3-2 · England: GCSE Combined Science: Inheritance, variation and evolution, GCSE Combined Science: Cell biology

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Date

Score/ 16

  1. Question 1

    A body cell of a cat has 38 chromosomes. How many chromosomes are in one of its gametes (sex cells)?

    Answer

  2. Question 2

    How many cells are produced when one cell divides by mitosis?

    • A. 4, genetically identical
    • B. 4, genetically different
    • C. 2, genetically different
    • D. 2, genetically identical

  3. Question 3

    A fruit fly sperm cell has 4 chromosomes. It fertilises an egg cell from the same species. How many chromosomes does the zygote (fertilised egg) have?

    Answer

  4. Question 4

    A body cell of a onion plant has 16 chromosomes. How many chromosomes are in one of its gametes (sex cells)?

    Answer

  5. Question 5

    Which type of division makes egg and sperm cells?

    • A. fertilisation
    • B. mitosis
    • C. meiosis
    • D. binary fission

  6. Question 6

    A cat sperm cell has 19 chromosomes. It fertilises an egg cell from the same species. How many chromosomes does the zygote (fertilised egg) have?

    Answer

  7. Question 7

    A body cell of a fruit fly has 8 chromosomes. How many chromosomes are in one of its gametes (sex cells)?

    Answer

  8. Question 8

    Which type of division makes egg and sperm cells?

    • A. mitosis
    • B. binary fission
    • C. fertilisation
    • D. meiosis

  9. Question 9

    A onion plant sperm cell has 8 chromosomes. It fertilises an egg cell from the same species. How many chromosomes does the zygote (fertilised egg) have?

    Answer

  10. Question 10

    A body cell of a fruit fly has 8 chromosomes. How many chromosomes are in one of its gametes (sex cells)?

    Answer

  11. Question 11

    How many cells are produced when one cell divides by mitosis?

    • A. 4, genetically different
    • B. 2, genetically different
    • C. 4, genetically identical
    • D. 2, genetically identical

  12. Question 12

    A fruit fly sperm cell has 4 chromosomes. It fertilises an egg cell from the same species. How many chromosomes does the zygote (fertilised egg) have?

    Answer

  13. Question 13

    A body cell of a cat has 38 chromosomes. It divides by mitosis. How many chromosomes are in each new cell?

    Answer

  14. Question 14

    How many cells are produced when one cell divides by meiosis?

    • A. 4, genetically identical
    • B. 2, genetically identical
    • C. 4, genetically different
    • D. 2, genetically different

  15. Question 15

    A horse sperm cell has 32 chromosomes. It fertilises an egg cell from the same species. How many chromosomes does the zygote (fertilised egg) have?

    Answer

  16. Question 16

    A body cell of a horse has 64 chromosomes. How many chromosomes are in one of its gametes (sex cells)?

    Answer

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  1. 19
  2. 2, genetically identical
  3. 8
  4. 8
  5. meiosis
  6. 38
  7. 4
  8. meiosis
  9. 16
  10. 4
  11. 2, genetically identical
  12. 8
  13. 38
  14. 4, genetically different
  15. 64
  16. 32