1. Describe how your model illustrates how a single stem cell can produce many cells and many different types of specialized cells. (2 points) 2. Predict the numbers of stem cells and specialized cells that will be produced by the next three rounds of division. You can do this by using the formula Xn = [2(n – 1)]/2n, where n represents the number of rounds of division. Enter these data in the additional rows of table 4 below. (3 points) Table 4: Cell Division and Differentiation Round of division Number of stem cells Number of specialized cells Total cells present Percent of total that have differentiated D5 D6 D7 3. How does your model show mitotic cell division and cell differentiation? How does your model and your calculations in tables 3 and 4 show that both processes are necessary to produce a multicellular organism? Use evidence from your model to support your answer. (4 points) 4. What is one weakness or limitation of the model that you made in part 2? Use evidence from your model to support your conclusion. (2 points)
