In this hands-on, minds-on activity, students use model chromosomes and answer analysis and discussion questions to learn how the cell cycle produces genetically identical daughter cells.
Students learn how DNA replication and mitosis ensure that each new cell gets a complete set of chromosomes with a complete set of genes.Students learn why each cell needs a complete set of genes and how genes influence phenotypic characteristics.
To understand how a single cell (the fertilized egg) develops into the trillions of cells in a human body, students analyze an exponential growth model of increase in number of cells. The final section provides a very brief introduction to cellular differentiation.
This activity can be used as an introduction to mitosis or to reinforce understanding of mitosis.
In our follow-up meiosis and fertilization activity (/sci_edu/waldron/#meiosis) students learn how the movement of gene-carrying chromosomes during meiosis and fertilization results in the inheritance of genes.