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Published byJustina Jordan Modified over 8 years ago
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Mitosis and Meiosis
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The Cell Cycle DNA: contains the information that tells a cell how to make proteins. Chromosomes: coiled structure of DNA and protein that forms in the cell nucleus during cell division.
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Prokaryotic Cells Binary Fission: the simple cell division in which one cell splits into two; used by bacteria.
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Homologous chromosomes: chromosomes with matching information. Chromotids: identical copies of a chromosome. Centromere: The region that holds chromotids together when a chromosome is duplicated.
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MITOSIS Nuclear division in a eukaryotic cell in which each cell receives a copy of the original chromosomes.
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Remember……. There are 3 STAGES in this process Interphase Mitosis Cytokinesis
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Four phases of Mitosis Prophase Metaphase Anaphase Telophase
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Interphase The time in between cell division
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Interphase THE CELL GROWS TO ITS MATURE SIZE THE CELL MAKES A COPY OF ITS DNA CHROMATIN-(threadlike form of dna) IT PREPARES TO DIVIDE
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Prophase (phase 1) Nuclear membrane breaks apart Chromosomes become rodlike. Centrioles move to opposite sides of cell. Fibers form between two pairs of centrioles
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Metaphase (phase 2) Chromosomes line up along equator (middle) of the cell. Spindle fibers attach through the centromere
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Anaphase (phase 3) Chromotids separate and are pulled to opposite side of cell by the fibers attached to centrioles
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Telophase (phase 4) Nuclear membrane forms around two sets of chromosomes. Fibers disappear
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Cytokinesis Cytoplasm splits in two. Result: two identical cell
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