mitosis

• Chromosomes


  Coiled up lengths of DNA molecules in the nucleus of a cell
• Chromosomes


  • Each chromosome carries a large number of genes
  • Determine the development of different characteristics, e.g. hair colour
• Body cells normally have two copies of each chromosome
• There are 23 pairs of chromosomes in a human cell
• The cell cycle


  1. Growth

  2. DNA Replication

  3. Cell division
• Mitosis


  1. Chromosomes replicate

  2. Chromosomes move to opposite ends of the cell

  3. Cell divides into two new cells

  4. Each new cell has an identical copy of the original chromosomes
• Mitosis is the process used by multicellular organisms to regrow and develop
• Body cells in multicellular organisms divide to make new cells
• The process where cell divides is called mitosis
• Each new cell produced by mitosis has the same DNA as the original cell
• Chromosomes are made up of genes that determine characteristics such as eye colour or height.