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Unformatted text preview: Bio 3/4 20:25 The cell cycle: Chromosomes connected by a centromere Parts of cell cycle: o Cell grows o Cell prepares for division- duplicates DNA o Cell divides into two new daughter cells o 2 main phases Interphases- cell prep/ growth M Phase- cell division interphase- o 3 sub phases G1- period of cell growth S- period of DNA replication G2- new organelles form M Phase- o Period of cell division Mitosis- division of nucleus P,M, A, T Cytokinesis- division of the cytoplasm Cytokinesis- begins during telophase Cytoplasm is divided Cell membrane pinches inward in animal cells Plant cells=cell plate forms then wall later M phase- Prophase- longest phase o Chromotin condenses to chromosomes o Centrioles go to opposite ends of cell o Spindle fibers form o Nuclear envelope breaks down Metaphase- o Sister chromatids line up across center of cell o Centrioles are connected to each chromosome at the centromere...
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- Spring '08