Student handouts are half sheet in length.Īttached to the end of the student handout are the rock pocket mouse trap data cards and traps (fold in half and staple to make a simple envelope for carrying the trap data cards. This assignment requires group work and discuss as well as full class and individual work. The dark rock environment doesn’t cause dark-colored rock pocket mice to appear. There is dark lava rock in the area where they live. Students will then graph the data provided.Īfter discussing their conclusions, students will view and interact with the HHMI website video (linked to the PPT) of “The Making of the Fittest” and respond to questions about the actual cause of the rock pocket mouse change over time. Nachman catches in the film have a mutation in a gene that leads to the dark fur color. o Natural Selection and Evolution of Rock Pocket Mouse Populations: This activity uses the HHMI. The trap data has been mixed up and the students need to try to find a logical chronological order for it and explain their reasoning. answer the questions on the accompanying worksheet. This assignment requires students to take the roles of scientists and use traps at two simulated locations to determine what is happening to the populations of dark coated and light coated mice. The rock pocket mouse, Chaetodipus intermedius, is a small, nocturnal animal found in the deserts of the southwestern United States. One day, the volcano near their habitat erupts!Īs the lava cools, it forms a dark black rock.The Rock Pocket Mice of southwestern United States have demonstrated a very clear and interpretable case for microevolution. Darker mice are more likely to get eaten, while lighter mice are more likely to survive and have more babies! The worksheet is intended to be assigned after students have been introduced to the Hardy Weinberg equation and have done some of the practice problems. Hawks and owls use their sight to hunt, so it is easier to see the darker colored mice since their fur does not blend in well with the ground. This activity can be included in a longer study on rock pocket mice that can be accessed at BioInteractive, where students can also watch a short video about the research on these desert mice. The Rock Pocket Mice have natural predators that eat them: mostly hawks and owls. These areas were, in the distant geologic past, entirely sandy desert. It has been called the snickers bar of the desert as it is a prey item for a variety of species, most prominent of which is the owl, a visual predator. Because most rock pocket mice have a sandy, light -colored coat, they are able to blend in with the li ght color of the desert rocks and sand that they live on. intermedius) is found in the southwestern United States and adjacent regions of Mexico. The Rock Pocket Mice have a lot of babies, which also have variation in their fur color! The rock pocket mouse, Chaetodipus intermedius, is a small, nocturnal animal found in the deserts of the southwestern United States. Hawks use their sight to hunt, so it is easier to see the darker colored mice since their fur does not blend in well with the ground. The Rock Pocket Mice have a natural predator that eats them: the Hawk. Most of thesemice have a sandy, light-colored coat that enables them to blend in with the light-colored desert rocks and sand on which they live. Some mice are light tan, and others are a darker brown. The rock pocket mouse, Chaetodipus intermedius, a small, nocturnal animal, is found in the deserts of the southwestern United States. Describe the location, history, and types of habitat where the rock pocket mouse lives. The Rock Pocket Mouse population has natural variation in their fur colors, just like humans have differences in hair color. Worksheet 10: Natural Selection & Non-random Mating 15 October 2019 6th Edition 23 461-462 Nonrandom mating 23 462-469 Natural selection. View Rock+Pocket+mouse+worksheet.pdf from ANTHR 70071 at Long Beach City College. Answer the questions below by typing your answers into the document, then save the document and submit it as an attachment using the link below.
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