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. of the Fittest: Natural Selection and Adaptation (or type in this URL. (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. Lets revisit and build on the Rock Pocket Mice Model of Genetics from Lesson 1. Students look at cards showing light and dark mice on different substrates. Changes in the Mc1r gene sequence are not responsible for the colour difference in the mice sampled from New Mexico, however, leading the researchers to conclude that the almost identical dark coat colours developed multiple times in rock pocket mice, an example of convergent evolution. adaptations and natural selection by studying a population of pocket mice through a video clip and then applying.
It has been simplified from the original activity so that it is suitable for beginner biology students. Thus melanism in rock pocket mice is considered a fabulous example of adaptation by natural selection. This worksheet was modified from the HHMI Activity on color variation in the rock pocket mouse. Use mathematical representations to evaluate explanations of how natural selection leads to changes in specific traits of populations over successive.
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