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Understanding Cell Division: Mitosis and Meiosis Explained

This resource explores the intricacies of cell division, focusing on the processes of mitosis and meiosis. It addresses concepts like parental and daughter cells, the chromosome count during these processes, and the implications of fertilization. The guide emphasizes the differences between asexual reproduction methods and discusses how chromosome numbers affect embryo development. Interactive diagrams and links to animations provide visual aids to enhance understanding, making it suitable for educational purposes in biology.

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Understanding Cell Division: Mitosis and Meiosis Explained

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Presentation Transcript

  1. What does this picture show? • What does “46” stand for? • How many parent(s) cell(s) and daughter cells? • Compare & Contrast parent and daughters genome • What type of reproduction do you recognize in this illustration?

  2. Parent cell Parent cell divide through asexual reproduction, 1. Which diagrams best illustrate the daughter cells that result from normal mitotic cell division of this zygote? 2. Explain

  3. Describe illustration A & B • Which method shows asexual reproduction? • How do you know? • Compare & Contrast method A & B

  4. 1. How many chromosomes would a sperm or an egg contain if either one resulted from the process of mitosis? 2. If a sperm containing 46 chromosomes fused with an egg containing 46 chromosomes, how many chromosomes would the resulting fertilized egg contain? Do you think this would create any problems in the developing embryo? 3. In order to produce a fertilized egg with the appropriate number of chromosomes (46), how many chromosomes should each sperm and egg have?

  5. Label as diploid or haploid

  6. Label as diploid or haploid

  7. Meiosis animation. Excellent. http://www.johnkyrk.com/meiosis.html Meiosis www.phschool.com Web Code: cbp - 4114 Mitosis / meiosis animation http://www.pbs.org/wgbh/nova/baby/divi_flash.html Meiosis and mitosis interactive http://www.biologyinmotion.com/cell_division/index.html

  8. Meiosis I Figure 11-15 Meiosis Section 11-4 Meiosis II Prophase II Metaphase II Anaphase II Telophase II

  9. Label: Meiosis I : Prophase I, Metaphase I, Anaphase I, Telophase I Mitosis II: Prophase II, Metaphase II, Anaphase II, Telophase II

  10. 1. State 3 differences between mitosis and meiosis: a. b. c. 2. Which diagram best represents part of the process of sperm formation in an organism that has a normal chromosome number of eigh?

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