![]() Most rock pocket mice that live in areas covered by dark-colored lava rocks, however, are dark in color. Use your mouse to choose the part that is a fragment Use your mouse to. Rock pocket mice that live in areas with a light-colored granite substrate are usually sandy in color. Be sure to keep your solution as you will be asked to rewrite it in Enum Types. We review our recent studies on this topic with emphasis on the following key results: the identification of a single gene (the melanocortin-1-receptor, Mc1r) in one population that appears to be largely responsible for color differences, the balance between selection and migration among neighboring melanic and light races, and the finding that melanism has evolved independently on different lava flows through changes at different genes. The rock pocket mouse is an excellent model organism to study geographic variation in phenotype within a single species. Motivated by the wealth of data on the genetics, biochemistry, and molecular biology of the pigmentation process, we have used a candidate-gene approach to identify the genetic basis of adaptive coat color variation in C. ![]() Dice and Blossom (1937) suggested that this crypsis is an adaptation to avoid predation. Since rock pocket mice reproduce quickly and often, the frequency of this favored trait would spread rapidly through the. Sample answer: The dark-colored mouse has a selective advantage in a habitat such as the Pinacate lava flow, which has a dark-colored substrate. intermedius coat color typically matches the color of the rocks on which the mice live the dorsal pelage varies from a light, sandy color for populations found on some granites to a dark, nearly black color for populations found on basalt lava flows. came to be so common in some populations of rock pocket mice. Your summary should include a description of how the. In a series of classic studies in mammalian evolutionary biology, Sumner (1921), Benson (1933), and Dice and Blossom (1937) described striking coat color variation in the rock pocket mouse, Chaetodipus intermedius, in the deserts of Arizona and New Mexico. Write a scientific summary that describes changes in the rock pocket mouse populations at location B.
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