Meiosis

• What process halves the number of chromosomes in gametes?

  Meiosis
• What restores the full number of chromosomes in gametes?

  Fertilization
• Where do cells divide by meiosis to form gametes?

  Reproductive organs
• What happens when a cell divides to form gametes?

  • Copies of genetic information are made
  • The cell divides twice to form four gametes
  • Each gamete has a single set of chromosomes
  • All gametes are genetically different
• How many gametes are formed when a cell divides twice?

  Four gametes
• Why are all gametes genetically different from each other?

  Due to the process of meiosis
• What happens to the new cell after fertilization?

  It divides by mitosis
• What occurs at fertilization regarding chromosomes?

  Gametes join to restore normal chromosome number
• What happens to the number of cells as the embryo develops?

  The number of cells increases
• What process occurs as the embryo develops?

  Cells differentiate