![]() ![]() Similarly, there are two major colors of substrate, or surface materials, that make up the desert floor. There are two common varieties-a light-colored variety and a dark-colored variety. What’s so special about these little mice? Populations of rock pocket mice are found all over the Sonoran Desert in the southwestern United States. Their impact on science, however, has been enormous. A typical rock pocket mouse is just about 170 millimeters long from nose to rump, shorter than an average pencil. I also wanted to share Examples - Not Quite as it shows the answers from students who did not quite acheive the level of detail needed to show understanding.The Making of the Fittest: Natural Selection and Adaptation LESSON STUDENT HANDOUT COLOR VARIATION OVER TIME IN ROCK POCKET MOUSE POPULATIONS INTRODUCTION The tiny rock pocket mouse weighs just 15 grams, about as much as a handful of paperclips. The Perfect Student Examples and Student Example Answers (all 4 questions) provide an idea of the type of answers I was looking for from my classes. ![]() You can assume that environmental conditions do not change over the 100 years.Ĥ. Use the data and what you have learned about evolution to explain how mutation is a random process, but natural selection is not random. a prediction that describes what the population will look like 100 years in the future.īase your prediction on trends in the data you have organized.an explanation of what caused the changes.a description of how the population has changed over time.Write a scientific summary that describes changes in the rock pocket mouse populations at location B. Why didn’t this phenotype become more common in the population?ģ. Explain the presence of dark-colored mice at location A. Remember that “fitness” is defined by an organism’s ability to survive and produce offspring.Ģ. Explain why a rock pocket mouse’s color influences its overall fitness. To end the lesson and allow students to synthesize all they have learned, students answer the following analysis questions (on data sheet):ġ. Once the data table is completed, students create a graph that illustrates the distribution of mice at locations A and B through time. Students go on to use what they learned from the video to verify or change their sequence of images and then complete the following data table (also found in the student data sheet). To ensure that students have enough time and information to accomplish all this, I show the video twice and have them compare information with the others at their tables in between viewings. What can explain the differences among the illustrations?.What role does the rock pocket mouse play in the desert food web?. ![]()
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