Biology, 29.04.2021 22:40 S28462182

Meiotic nondisjunction could be a result of . See Section 13.3 (Page) . Steps of meiosis: 1. Interphase (Before meiosis begins): Uncondensed chromosomes replicate in parent cell. Meiosis I (homologous chromosomes separate): 2. Early prophase I: Chromosomes condense, spindle apparatus forms. Pairing of homologous chromosomes. 3. Late prophase I: Chiasmata (crossover points) visible. 4. Metaphase I: Movement of bivalents to metaphase plate is complete. 5. Anaphase I: Homologs separate and begin moving to opposite poles of the spindle apparatus. 6. Telophase I (Before Meiosis II begins): Homologs finish moving to opposite poles. Cytokinesis: Cell divides; chromosome number is reduced. Meiosis II (sister chromatids separate): 7. Prophase II: Spindle apparatus reforms. 8. Metaphase II: Chromosomes are lined up at metaphase plate. 9. Anaphase II: Sister chromatids separate, begin moving to opposite poles. 10. Telophase II: Daughter chromosomes finish moving to opposite poles. Cytokinesis: Cell divides; chromosome number is unchanged.

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Meiotic nondisjunction could be a result of . See Section 13.3 (Page) . Steps of meiosis: 1. Interph...

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