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CHAPTER 10: Chromosomes, Mitosis, and Meiosis Student Notes Definitions and Questions: The proteins that help to package chromosomes are known as __________________, and the proteins that hold large loops of chromatin are called _____________________________. What is a karyotype? What are the 2 major phases of a eukaryotic cell’s life? Name the 3 phases within interphase, and describe important events that happen during each phase: 1. 2. 3. The phase describing arrested development is known as ____. What is mitosis? Why is it necessary to duplicate the cell’s DNA prior to mitosis? Name the 4 major phases of mitosis, and describe important events that happen during each phase: 1. 2. 3. 4. What structures attach the sister chromatids to each other? The mitotic spindle connects to the chromatid via the _______________________________. Cytokinesis in an animal cell occurs via the formation of a ____________________________, and in a plant cell via the formation of a _____________________. When do the 3 cell-cycle checkpoints occur? A sex cell is known as a _____________________, and is haploid/diploid. Meiosis consists of what 9 major steps? 1. 2. 3. 4. 5. 6. 7. 8. 9. What is a tetrad? What important event occurs during Prophase I? Where (on the tetrad) does this event occur? Why is this significant? What step is “missing” from interkinesis? Chapter 10 Goals: 1. Describe how chromosomes are packaged for cell division. 2. List the phases of a cell’s life and describe what happens during each stage. 3. Familiarity with the phases of mitosis and meiosis and important events during each stage.