DNA unravelled and replicated. Organelles are also replicated
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What is prophase?
Chromosomes condense, Centrioles start moving to opposite ends of the cell forming a spindle. The nuclear envelope breaks down and chromosomes lie free in the cytoplasm
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What is metaphase?
Chromosomes line up along the middle of the cell and become attached to the spindle by the centromere.
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What is anaphase?
Centromeres divide seperating each pair of sister chromatids. Spindles contract, pulling chromatids to opposite ends of the cell, centromere first
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What is telophase?
Chroatids reach opposite poles on the spindle. Uncoil, become long and thin again, and become chromosomes again. A nuclear envelope reforms.
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Why do you stain chromsomes?
To observe the cell cycle and mitosis under a microscope
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