Mitosis160-page10

Mitosis160-page10 - Cell Reproduction: Mitosis - 10...

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Cell Reproduction: Mitosis - 10 Cytokinesis: Separation of the Cytoplasmic Contents Mitosis describes events of chromosomes and nuclei. Most cells accompany mitosis with cytokinesis, the separation of the cytoplasm of the original cell into two new cells. This is not always the case. Some organisms (including many fungi and algae) are "multinucleate", they just have one cell body with many nuclei. Some animal tissues are also multinucleate. Cytokinesis coincides with the events of telophase or occurs immediately after, so that at the completion of mitosis, the original cell is separated into two cells, each with a nucleus and DNA identical to that of the original cell. Although the end result of cytokinesis is always two new cells, the mechanism of separation is different in plants and animals, so we shall discuss them separately. Cytokinesis in Animal Cells The cells of animals lack cell walls. Cytokinesis in animal cells is started with the formation of a cleavage furrow, a depression or pinching in of the plasma
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.

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