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10 Cards in this Set
- Front
- Back
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Fraternal Twins.
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Twins that come from two different eggs.
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Identical Twins
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Twins that come from the same egg.
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Mitosis
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Cell division (cell coping) (not sperm,egg or nerve cells.
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First stage of Mitosis
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Before cell division start,chromosomes are copied
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Second stage of mitosis
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The nuclear membrane dissapears and the cromosomes thiken
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Third Stage of Mitosis
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Cromosomes continue to thiken as they line up into the center
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Fourth stage of Mitosis
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The chromosomes seperate into two identical sets and begin to move to opposite sides of the cell
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Fifth Stage of Mitosis
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chromosomes are at the middle of the cel. A nuclear membrane forms around each set of cromosomes.
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Stage six of Mitosis
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The cell membrane pinches off bettween the two nuclei, forming two new cells each with 46 new chromosomes.
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Sperm and egg
(what # of cells) |
each mom and dad have 46 cells. 23 from mom and dad to make a baby 23+23=46
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