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15 Cards in this Set
- Front
- Back
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What is mitosis? |
A type of cell division that produces two daughter cells identical to the parent cell. |
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Purpose of mitosis. |
For growth and replacement |
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Where does mitosis occur? |
It happens all over the body. (In somatic cells) |
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What happens when mitosis goes wrong? |
Cells start producing uncontrollably and cause cancer. |
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Brief steps of mitosis. |
Mitosis start with one body cell containing 46 chromosomes. The cell then replicates all of the chromosomes once and divides once to produce two new daughter cells. |
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How many chromosomes does a cell have? |
46 chromosomes |
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Order in which the mitosis phases occur. |
Interphase Prophase Metaphase Anaphase Telophase Cytokinesis |
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Interphase |
DNA molecules and centrioles replicate. |
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Prophase |
•Nucleus disappears •Nuclear membrane breaks down. •Chromosomes appear as chromatids. •Centrioles migrate to the poles |
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Metaphase |
•Chromosomes line up at the equator of the cell. •Each chromosome has a spindle fibre attached to its centromere. |
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Anaphase |
•Pairs of chromatids (referred to as chromosomes) seperate to now be referred to as chromosome. •Chromosomes are pulled apart at the centromeres to the opposite sides of the cell. |
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Telophase |
•Spindles disappear •Two nuclei form •Nuclear membrane forms around each group of chromosomes. •New nucleolus form in each nucleus. •Each have a diploid number of chromosomes. (46 chromosomes) |
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Cytokines |
Cytoplasm of the cell divides and seperate nuclei into two identical daughter cells. |
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Female chromosome |
XX |
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Male chromosome |
XY |
