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Topic 5- The Cell Cycle and Mitosis
The Cell Cycle
The cell cycle is the process of cell growth and division.
Interphase is the longest phase, most cells in dividing
tissue will be in this phase.
Interphase consists of growth and replication.
This is the stage between cell division where the DNA
exists as chromatin and cannot be seen.
Mitosis is the process of the cell cycle that involves
One parent cell divides to produce two daughter cells,
each containing and exact full copy of the parent cell's
Chromosomes become visible as DNA is coiled and
super coiled. They shorten and thicken.
Each appears as chromatids attached to a centromere.
The spindle forms and is made from a network of
The nuclear membrane disintegrates.
Chromosomes line up along the equator of the cell.
They are attached to the spindle by the centromeres.
The spindle contracts pulling the chromatids apart from the centromere
to the opposite poles of the cell.
Spindle disintegrates and the chromosomes unwind.
The nuclear membrane reforms.
The cell divides.