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Name _________________________ Period ______ Date ___________________ Online ASSIGNMENT: MITOSIS A eukaryotic cell typically has a great deal of genetic material. For example, if the DNA of a human cell were uncoiled and lined end to end, it would extend approximately two meters! The genetic material is replicated before cell division and then must be divided equally between daughter cells. In mitosis, which is division of the nucleus, the chromosomes condense into bodies small enough to travel efficiently in the cell. At the end of mitosis, the chromosome shave been separated into two new nuclei. These nuclei become part of the daughter cells that are genetically identical to each other and to the original parent cell . Interphase Step 1 1. What happens to the chromosomes in the box on the left? _______________________________ 2. This occurs during which of the three phases of Interphase? _____________________________ Step 2 3. What happens to the centrosomes? ________________________________________________ 4. What stage of Interphase do organelles replicate? _____________________________________ Step 3 5. What do the chromosomes look like at the end of Interphase? ____________________________ 6. During which stage and phase of the cell cycle do the chromosomes condense? ___________(stage) and _______________ (phase) Mitosis: Prophase Step 4 1. What is happening to the nuclear envelope or nuclear membrane? __________________________ 2. Where are the centrioles (with spindle fibers attached) moving? ___________________________ Mitosis: Metaphase Step 5 3. How have the chromosomes changed in this phase? _____________________________________ 4. What connects the centriole and the chromosomes? ____________________________________ Mitosis: Anaphase Step 6 5. What happened to the chromosomes in this phase? _____________________________________ 6. Where are the chromosomes located? ______________________________________________ Mitosis: Telophase Step 7 7. What is the cell membrane doing? _________________________________________________ 8. What is the nuclear envelope or nuclear membrane doing? ________________________________ Cytokinesis 9. What happens during Cytokinesis? _________________________________________________ 10. How many cells are present? _____________________________________________________ Conclusion Questions 11. Would all the cells be an exact copy of the original? ____________________________________ 12. What is the purpose of Cell Division? _______________________________________________ ___________________________________________________________________________ And finally, take the quiz! What is your score? ______________