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Three cell cycle stages included in Interphase - G1 - S - G2 Two processes that occur during M-phase - Mitosis - Cytokinesis 5 Major phases of Mitosis 1. Prophase 2. Prometaphase 3. Metaphase 4. Anaphase 5. Telophase Prometaphase – the nuclear envelope breaks down and chromosomes attach to spindle microtubules Metaphase – chromosomes align at the spindle equator Anaphase – sister chromatids separate and move to opposite poles Telophase – the nuclear envelope reassemble and the contractile ring is visable Major difference between Mitosis and Meiosis Mitosis Starting cell type Somatic Starting cell (diploid or haploid) diploid Cells types generated Somatic Number of cells generated two Genetic constancy or diversity Genetic constancy Meiosis germ cells diploid Gamates (egg/sperm) four Genetic Diversity Best describes the chromosomes that are lined up at the spindle equator during metaphase of Meiosis 1 - Two pairs of sister chromatids - Pairs of replicated homologous chromosomes double file Three types of microtubules involved in cell divison - Kinticore microtubules - Aster - Interpolar