mitosis

• interphase


  organelles double, cell grows and the DNA replicates
• nuclear division


  DNA is replicated so it is identical for growth and repair
• cytokinesis


  division of the cytoplasm in two
• PMAT


  prophase, metaphase, anaphase, telophase
• what happens during prophase?


  Chromosomes condense and become visible, the nuclear membrane breaks down, and the spindle fibres form. Centrioles move to opposite poles
• what happen during metaphase?

  chromosomes align along the equator and spindle fibres attach to either the chromatid or centromere
• what happens during anaphase?

  spindles retract and the centromere divides. Chromatids separate and move to opposite poles of the cell. (this requires ATP)
• what happens during telophase?

  chromosomes become longer and thinner so become chromatin, the spindles disintegrate and the nucleus reforms
• what is cytokinesis?


  cytoplasm splits in two to produce genetically identical daughter cells
• state the equation for mitotic index


  the number of cells undergoing mitosis/total number of cells