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Transcript
PROCESS OF MEIOSIS SECTION 6.2 Power Notes Homologous chromosomes: pair of chromosomes, inherit one from each parent, carry the same genes although the genes may code for different alleles, separate in meiosis I Sister chromatids: duplicates of each other, each half of a duplicated chromosome, attached together at the centromere, separate in meiosis II Meiosis I 1. Prophase I: chromosomes condense, homologous chromosomes begin to pair up, nuclear envelope breaks down, spindle fibers form 2. Metaphase I: spindle fibers align homologous chromosomes along the cell equator 3. Anaphase I: omologous chromosomes separate to opposite sides of cell, sister chromatids remain attached together 4. Telophase I: spindle fibers fall apart, nuclear membrane may form again, cell undergoes cytokinesis Meiosis II 5. Prophase II: nuclear envelope breaks down if necessary, spindle fibers form 6.Metaphase II: 7. Anaphase II: spindle fibers align chromosomes along the cell equator chromatids separate to opposite sides of cell 8.Telophase II: nuclear membranes form around chromosomes, chromosomes begin to uncoil, spindle fibers fall apart, cell undergoes cytokinesis