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10 Cards in this Set
- Front
- Back
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Interphase
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This is the normal state of a cell. Just going about its daily business of surviving and making sure it has all of the nutrients and energy it needs. It is also getting ready for another division that will happen one day. It is duplicating its nucleic acids, so when it's time for prophase again, all the pieces are there.
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Prophase
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A cell gets the idea that it is time to divide. It has to get everything ready. You need to duplicate DNA, get certain pieces in the right position (centrioles), and generally prepare the cell for the process of mitotic division.
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Metaphase
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The DNA lines up along a central axis and the centrioles send out specialized tubules that connect to the centromere. The DNA (chromatin) has now condensed into chromosomes.
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Anaphase
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The separation begins. Half of the chromosomes are pulled to one side of the cell; half go the other way.
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Telophase
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This is the time when the cell membrane closes in and splits the cell into two pieces. You have two separate cells each with half of the original DNA.
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Mitosis
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Cell duplication
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Meiosis
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A second division of cells to create sex cells.
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Crossing over
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An exchange of genes. The genes are mixed up, not resulting in a perfect duplicate like mitosis.
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Products of Mitosis
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2 identical sister cells
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Products of Meiosis
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4 haploid gametes with half the DNA needed to create a functioning cell.
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