MITOSIS

VOCABULARY :

• Cell Division - process by which cell reproduce
• Chromosomes - cell parts that determine what traits a living thing will have
• Chromatid - one strand of DNA, after replication, a chromosome is made up of two identical chromatids
• Daughter Cells - new cells produced by cell division
• Cytokinesis - a division of the cytoplasm of one parent cell into two daughter cells

Interphase
          - DNA has replicated but has not formed the condensed structure of chromosome. They remain as loosely coiled chromatin. The nuclear membrane is still intact to protect the DNA molecules from undergoing mutation.
   G1
   S - synthesis (DNA)
   G2

Early Prophase
          - the nuclear membrane breaks down
          - chromosomes shorten and thicken
          -centrioles are forming

Late Prophase
          - centriole pairs move apart
          - nuclear envelope starts to break up

Metaphase (midddle)
          - the chromosomes are lined up along the cell's equator
          - are attached to the mitotic spindle

Anaphase (away)
          - the newly formed chromosomes are pulled toward opposite poles of the cell

Telophase
         - the chromosomes have finished their migration to the poles
         - the plasma  membrane of the cell pinches down along the equator
         - the nuclear membrane forms again and the nucleolus reappears

Cytokinesis
         - after mitosis, two diploid daughter cells have formed