Ancestral pocket mice had light-colored coats that blended in with the regions rocks and. The activity begins with students reading a magazine article and watching the film. Rock pocket mice live in the deserts of the American southwest. include coat color as an important means of camouflage for the rock pocket mice. Multiple-choice questions in the video and analysis and discussion questions in the. Explain why a rock pocket mouses color influences its overall fitness. Students analyze genetic sequence data and draw conclusions about the evolution of coat-color phenotypes in the rock pocket mouse. natural selection in the evolution of fur color in rock pocket mice. This is typical of pocket mice - their color often matches the background color of their habitat. This activity supports concepts covered in the film Natural Selection and Adaptation.
The mouse pictured is sitting on a lava rock, probably in New Mexico, and the color of its fur blends with the dark rock. Many studies have found coat color variation in the rock pocket mouse in deserts of the southwestern states (Nachman, Hoekstra, and D’Agostino, 2005). Their inconspicuous burrows are located near or under rocks, in rocky gulches or canyons, or near boulders. The rock pocket mouse is one of the most studied models for phenotypic color variation. (It is sometimes grouped in the genus Perognathus.)Īs their name indicates, Rock Pocket Mice dwell in rocky habitats, and only rarely live in areas with sandy or silty soils. intermedius, is one of 19 species of pocket mice in the genus Chaetodipus.
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