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Flashcards · Biology · Reproduction and Meiosis

Meiosis and Fertilisation

16 cards

  1. Where does meiosis take place?

    In the reproductive organs.

  2. What does meiosis do to the number of chromosomes?

    It halves it.

  3. How many gametes does meiosis make?

    Four.

  4. How many divisions are there in meiosis?

    Two.

  5. What happens before the cell divides?

    Copies of the genetic information are made.

  6. Are the gametes identical to each other?

    No, they are all genetically different.

  7. How many chromosomes are in a human gamete?

    23.

  8. How many chromosomes are in a human body cell?

    46.

  9. What does fertilisation restore?

    The normal number of chromosomes.

  10. What type of division follows fertilisation?

    Mitosis.

  11. What is a ball of cells called?

    An embryo.

  12. What does differentiate mean?

    To become specialised.

  13. What happens to the number of cells in the embryo?

    It increases.

  14. Is knowledge of the stages of meiosis needed?

    No.

  15. Does meiosis make a clone?

    No, the gametes are genetically different.

  16. Common mistake about meiosis?

    Saying that it forms two cells. It forms four.