No Mc1r mutations were associated with dark fur color in the New Mexico populations. The mutations responsible for the dark fur color in the Arizona mice were absent from the three different populations of New Mexico mice. The entire Mc1r gene was sequenced in all 76 of the mice collected. The selective advantage discussed in the animation corresponds to the selection coefficient ( s ). This animation uses equations from population genetics to simulate how quickly a new, advantageous fur color spreads through a rock pocket mouse population. 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. However, the dark-colored mice from the three New Mexico locations were slightly darker than the dark-colored mice from the Arizona population. Mutations with even a small selective advantage can lead to rapid evolution of populations. came to be so common in some populations of rock pocket mice. colored and light-colored substrates to support your answer. To determine if the rock pocket mouse population is evolving, explain why it is necessary to collect fur color frequency data over a period of many years. Nachman and colleagues observed no significant differences in the color of the rocks in the four locations sampled. ROCK POCKET MOUSE ALLELE FREQUENCIES ACTIVITY.

Each image represents a snapshot in time of two locations: A and B. Educators earn digital badges that certify knowledge, skill, and experience.In a separate study, 76 rock pocket mice were collected from four different, widely separated areas of dark lava rock. Rock Pocket Mouse Activity Essential Question: How does a physical characteristic of a population change over time Examine the population of rock pocket mice populations over time. (Key Concepts C, D, and F) As you saw in the film, rock pocket mice evolved. Save time lesson planning by exploring our library of educator reviews to over 550,000 open educational resources (OER).Īn all-in-one learning object repository and curriculum management platform that combines Lesson Planet’s library of educator-reviews to open educational resources with district materials and district-licensed publisher content.Ī comprehensive online edtech PD solution for schools and districts. ANSWER KEY THE MAKING OF THE FITNESS: NATURAL SELECTION AND ADAPTATION. As you watch, record the following information. Dark-colored rock pocket mouse populations have been found living on black, basaltic rock formations caused by geologic lava flows. Most rock pocket mouse populations have sandy-colored fur, which is consistent with the light color of the desert rocks and sand on which they live. Watch the short film The Making of the Fittest: Natural Selection and Adaptation. Biology questions and answers QUESTIONS 1. Biology questions and answers QUESTIONS 1.

Most rock pocket mice that live in areas covered by dark-colored lava rocks, however, are dark in color. Rock pocket mice that live in areas with a light-colored granite substrate are usually sandy in color. ANSWER KEY ACTIVITY 1 GENE TABLE 1: WILD-TYPE MC1R GENE (LIGHT COAT-COLOR. The rock pocket mouse is an excellent model organism to study geographic variation in phenotype within a single species. Timely and inspiring teaching ideas that you can apply in your classroom MAKING OF THE FITTEST: ROCK POCKET MOUSE ANSWER SHEET PROCEDURE 1. TO THE MOLECULAR GENETICS OF THE COLOR MUTATIONS IN ROCK POCKET MICE. As shown in the animation, mice that blend in with their surroundings are harder for owls and other predators to see. Manage saved and uploaded resources and foldersīrowse educational resources by subject and topic Rock pocket mice can have either light-colored or dark-colored fur. Search reviewed educational resources by keyword, subject, grade, type, and more Rock pocket mice, Chaeotdipus intermedius, are an ideal system in which to study intraspecific phenotypic divergence because of the extensive color variation observed within this species.

Rock pocket mouse lab answers