Finally, students hypothesize how the change in sequence and thus protein function might directly affect the coat-color cell signaling pathway of the rock pocket mouse populations. Through their analyses, students come to understand the concepts of cell signaling. Color Variation over Time in Rock Pocket Mouse Populations. both light- and dark-colored rock pocket mouse populations. Throughout the activity, students learn concepts such as fitness, natural selection, mutation, and phenotype. Project deadline is always 2 weeks after the eDay was assigned. Students then watch the HHMI Video on pocket mice and answer discussion questions. Students also graph the color differences at each location to show how the dark variation increased over time in response to an environmental change. Use mathematical representations to evaluate explanations of how natural selection leads to changes in specific traits of populations over successive. Some of the rock pocket mice have light fur and some have dark fur. The dark rocks are cooled lava from volcanic eruptions. (Cards can be printed and laminated for multiple uses.) Students collect data on the number of mice phenotypes in each location and develop a hypothesis about the order of the cards. Evolution of Fur Color in Mice Mutation, Environment and Natural Selection1 Rock pocket mice live in a desert where many areas have light-colored sand or rocks and other areas have dark rocks. Students look at cards showing light and dark mice on different substrates.
It has been simplified from the original activity so that it is suitable for beginner biology students. Mouse(1).docx from BIO 1100 at College of DuPage. This worksheet was modified from the HHMI Activity on color variation in the rock pocket mouse.
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