mitosis1

MitosisA model demonstration of this part

of cell division.

PreparationStart by laying the string circle flat on the table in a “cell like” shape.

PreparationAdd the chromosomes – 1 yellow string and 1 red string(note – there are more than this, but for explanation purposes, we shall keep it simple)

PreparationAdd the Centrioles(note – these are MUCH LARGER than normal for demonstration purposes)

INTERPHASE The cell remains in this phase as it carries out normal life processes. DNA is replicated before the division process begins. Chromosomes change to sister chromatids at the end of this phase.

PROPHASESister Chromatids are present. Centrioles appear and begin to move to opposite ends of cell. Spindle fibers form between the poles.

METAPHASESister chromatids line up along the center of the cell. They attach to the spindle fibers.

ANAPHASESister Chromatids separate and are pulled toward cell edges. They move toward the opposite ends of the cell.

TELOPHASENew nucleus forms at each end of the dividing cell. Mitosis is ending.

CYTOKINESISThe rest of the cell contents divided between 2 daughter cells. Cell membrane moves inward to create two cells, each with its own nucleus and identical chromosomes.

New cell is formed and the process begins again.

How is this model accurate?How is this model inaccurate?