Meiosis and fertilisation

• What process produces gametes in humans?

  Meiosis
• How many pairs of chromosomes are in a normal human cell?

  23 pairs
• What type of chromosomes do gametes contain?

  Single chromosomes
• How many single chromosomes are in a human gamete?

  23 single chromosomes
• Where does meiosis occur in humans?

  In reproductive organs
• What are the male and female reproductive organs called?

  Testes and ovaries
• What happens to chromosomes in the first stage of meiosis?

  All chromosomes are copied
• How many gametes are produced from one original cell in meiosis?

  Four gametes
• What is the genetic relationship of the gametes produced by meiosis?

  They are genetically different
• What is the term for the joining of male and female gametes?

  Fertilization
• What happens to the number of chromosomes after fertilization?

  It is restored to normal
• What type of cell results from fertilization?

  Fertilized egg
• What process occurs after fertilization?

  Mitosis
• What is formed as a result of mitosis after fertilization?

  A clump of identical cells
• What do scientists call the clump of identical cells after fertilization?

  Embryo
• What happens to cells as the embryo develops?

  They differentiate into different cell types
• What types of cells can differentiate in animals?

  Nerve cells and muscle cells
• Where can students find questions on meiosis and fertilization?

  In the revision workbook