BIOL 1000 Lecture Notes - Lecture 20: Spindle Apparatus, Cell Cycle, Kinetochore

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Each checkpoint a cell could stop dividing: for many cells, the g1 checkpoint seems to be the most important one. If a cell receives the go ahead signal at the g1 checkpoint, it will usually complete the rest of the cell cycle(s, g2, m phases) and divide. Cancer cells act as if they have a signal to grow and divide when they do(cid:374)"t ha(cid:448)e it: 1. ) List the phases of the cell cycle; describe the sequence of events during each phase: 2. ) List the phases of mitosis and describe the events characteristic of each phase: 3. ) Draw or describe the mitotic spindle, including centrosomes, kinetochores and asters: 4. Compare cytokinesis in animals and plants: 5. ) Describe the process of binary fission in bacteria: be able to do the above things, living organisms are distinguished by their ability to reproduce their own kind.

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