Monday, January 18, 2010

what we did in class 1/18/10

This week in class we further discussed the process of mitosis. We learned each step more thoroughly. The first step is prophase. In this step the DNA starts to coil and makes chromosomes. Also proteins in the cells start to make spindle fibers and the nuclear membrane around the cell disintegrates. The next step is metaphase where the chromosomes line up in the center of the cell. The next step is anaphase. In anaphase the spindles pull each chromatid to opposite poles in the cell. The final stage is telephase where two nuclei star to form in the cell. Then the cell seperates into two identical cells in the process of cytokinesis.

The other process in which the cell grows through is called interphase. Interphase is anytime in the cell other than mitosis. This is the time the DNA replicates and the cell gets ready to preform mitosis.

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