Grayce P. Storey
All animals and plants are made up of cells. As the human embryo forms like cells organize the body according to the genetic blueprint each cell carries within itself. All cells contain a nucleus that is the center for reproduction and carries the genetic code.
The division of one living cell and making two complete living cells is an important biological phenomenon. By this process, continuity of a species is ensured and mutation of a species is made possible.
Before the cell divides the material in the nucleus is duplicated. Cell division involves the cleavage of the cytoplasm and the nucleus.
To form two new cells the nucleus of the dividing cell goes through four stages:
Prophase—This is the first phase of mitosis. The nuclear membrane begins to disappear. The chromatin shortens and thickens to form the rod-like chromosomes. Two centrioles double then seperate. Spindle fivers form between centrioles. Chromosomes pairs become attached.
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Metaphase—In the second phase the chromosomes pair up along the equator.
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Anaphase—In the third phase, there is a separation of sister chromosomes and the beginning of movement of sister chromosomes toward the opposite poles.
Telophase—In the final phase of the cell division process, the cell body divides into two. Each daughter cell completes the process which restores it to an interphase cell.
Interphase is the period between mitosis. During this stage, the cell is performing all of its life function but no division is taking place.
Mitosis Cell Division
(figure available in print form)