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Chapter 12: The Cell Cycle

Copyright 2011 Pearson Education, Inc. - 1 - Name_____Period_____ Chapter 12: The Cell Cycle Overview: 1. What are the three key roles of cell division? State each role, and give an example. Key Role Example Reproduction An amoeba, a single-celled eukaryote, divides into two cells . Each new cell will be an individual organism. Growth and development A sand dollar embryo forms two cells shortly after the fertilized egg is divided. Tissue removal Dividing bone marrow cells will give rise to new blood cells . 2. What is meant by the cell Cycle ? The cell Cycle is the life of a cell from the time it is first formed from a dividing parent cell until its own division into two daughter cells . Concept Most cell division results in genetically identical daughter cells 3. What is the meaning of genome? A genome is a cell s endowment of DNA, its genetic information. 4. How many chromosomes are in a human somatic cell?

mark shortened, while those on the spindle pole side stayed the same length. During anaphase in this cell type, chromosome movement is correlated with kinetochore microtubules shortening at their kinetochore ends and not at their spindle pole …

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