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Mr. Watt's Biology II Students Build Models of Cell Division

September 25, 2020

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Mitosis is a process that is ever-present to life, and a foundational topic necessary for the understanding of advanced topics like growth and development, reproduction, and many disease processes. Missouri Learning Standards related to this topic for high school students direct us to use models to assist in student learning, which is exactly what Mr. Watt's students are presently doing. It will be exciting to see the results of their work next week!

Growth and Development of Organisms:

9-12.LS1.B.1 Develop and use models to communicate the role of mitosis, cellular division, and differentiation in producing and maintaining complex organisms.- Chapter 11

  • I can identify and describe the components of a given model relevant for illustrating the roles of mitosis, cellular division, and differentiation in producing and maintaining complex organisms.  The model could include:

    • genetic material containing two variants of each chromosome pair, one from each parent.

    • parent and daughter cells (i.e., inputs and outputs of mitosis).

    • a multicellular organism as a collection of differentiated cells.

  • I can identify and describe the relationships between components of a given model where:

    • Daughter cells receive identical genetic information from a parent cell or a fertilized egg. 

    • Mitotic cell division produces two genetically identical daughter cells from one parent cell. 

    • Differences between different cell types within a multicellular organism are due to gene expression—not different genetic material within that organism.

  • I can use a model to illustrate that mitotic cell division results in more cells that allow growth of the organism, can then differentiate to create different cell types, and can replace dead cells to maintain a complex organism.

  • I can make a distinction between the accuracy of a model and the actual process of cellular division.