{"id":100,"date":"2019-10-07T06:33:09","date_gmt":"2019-10-07T10:33:09","guid":{"rendered":"https:\/\/iblog.dearbornschools.org\/biomeek\/?p=100"},"modified":"2019-10-07T06:33:10","modified_gmt":"2019-10-07T10:33:10","slug":"pocket-mice","status":"publish","type":"post","link":"https:\/\/iblog.dearbornschools.org\/biomeek\/2019\/10\/07\/pocket-mice\/","title":{"rendered":"Pocket Mice"},"content":{"rendered":"\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"HHMI&#039;s Natural Selection Video in HD\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/vsjLGbpl708?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>Color variation over time in rock pocket mouse populations.<\/strong><\/h1>\n\n\n\n<p><strong>Introduction<\/strong>:<\/p>\n\n\n\n<p>A typical rock pocket mouse is about 170 millimeters long from nose to rump, shorter than an average pencil. And at just 15 grams, this tiny mouse weighs about as much as a handful of paper clips. Rock pocket mice, however, have had an enormous impact on science. What\u2019s so special about them?&nbsp;<\/p>\n\n\n\n<p>You can find populations of rock pocket mice all over the Sonoran Desert in the southwestern United States. There are two common varieties\u2014a light-colored variety and a dark-colored variety. There are also two major colors of substrate, or surface materials, that make up the desert floor. Most of the landscape consists of light-colored sand and rock, but patches of dark volcanic rocks that formed from cooling lava flows are found, separated by several kilometers of light-colored substrate.<\/p>\n\n\n\n<p><strong>Procedure<\/strong>:<\/p>\n\n\n\n<p> The illustrations on the back represent snapshots of rock pocket mouse populations. Each quadrant illustration shows the color variation at two different locations, A and B, at a particular moment in time. (Note: The images are out of order.)&nbsp;<\/p>\n\n\n\n<p><strong>1. Count<\/strong> the number of light-colored and dark-colored mice present at each location at each moment in time. Record your counts in a chart that resembles the one to the right.<\/p>\n\n\n\n<p>Time 1:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh6.googleusercontent.com\/Ws4eHwQb1cmQ7Noa272AIpYRWG--M_khI2JNhr1Lg5GNLgBvDPUlDUGGAg7VxNhJyoELu9etorBKTNj01btvNpn2T9MPnawvfma24uM3BQ-KIu8f1WhmIUyuFqu6g1Vg36-N7ouN8jfrsCBnwA\" alt=\"\"\/><\/figure>\n\n\n\n<p>Time 2:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh3.googleusercontent.com\/KnWuXZXADwe4egzrHAFxyuFP8j4AZU6EStxFb2QSJN-BMakZb6xLIBqooFWTANVbIRjitEHnAPPh2HtE_h70TV77VpGJIfNtWuVYK8i0D0BGLfNh5PtRj5Xu9vBjAnFs6O1A9CKwQ4hzF6C_1Q\" alt=\"\"\/><figcaption><br>Time 3:  <\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh6.googleusercontent.com\/yFOklRsv6f571CedqP_4dpZ5N8lcVhYbR89LYxgRZIeSpSm7T5Tp3Nj5ffIZYXnQwIdBzTQMYWcYzSvbSD9tdbhlrQlIuV6hV-3_JQNsRZ6gaNi5MABjv8TqqZtdmYiLGNkKmvlGq8WA4UZ41w\" alt=\"\"\/><figcaption><br>Time 4:<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh5.googleusercontent.com\/Cpr3_O9DxS-WKUpaTcni98scnQfYBfNxmSnqR23uWdyI3k0x6wcjMp2K3AUqOKwsa6ND0S54ylgQ6Ek2MJkbN5bmhO6cXQn7JYSewZPE2Xxy0LmJVlxdKw1wONGvrnFXDw0SDOxAkZ51bsW1TQ\" alt=\"\"\/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>2. Rank the illustrations<\/strong> what you think is the correct order from oldest to most recent.\u00a0<\/p>\n\n\n\n<p><strong>3. Explain<\/strong> how you decided which illustration represents the most recent rock pocket mouse population and why you positioned the others in the sequence as you did. <\/p>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr><td>Time<\/td><td>Location A&nbsp; Light<\/td><td>Location A&nbsp; Dark<\/td><td>Location B&nbsp; Light<\/td><td>Location B Dark<\/td><\/tr><tr><td>1<\/td><td><br><\/td><td><br><\/td><td><br><\/td><td><br><\/td><\/tr><tr><td>2<\/td><td><br><\/td><td><br><\/td><td><br><\/td><td><br><\/td><\/tr><tr><td>3<\/td><td><br><\/td><td><br><\/td><td><br><\/td><td><br><\/td><\/tr><tr><td>4<\/td><td><br><\/td><td><br><\/td><td><br><\/td><td><br><\/td><\/tr><\/tbody><\/table>\n\n\n\n<p>Oldest ______ ________ _________ _______\u00a0 Most Recent<br><\/p>\n\n\n\n<p><strong>4. <\/strong>Watch the video: Think about the following as you watch the film:&nbsp;<\/p>\n\n\n\n<p>\u2022 Why are some mice light colored and some mice dark colored?&nbsp;<\/p>\n\n\n\n<p>\u2022 Does fur color provide any selective advantage or disadvantage?&nbsp;<\/p>\n\n\n\n<p>\u2022 What role does the rock pocket mouse play in the desert food web?&nbsp;<\/p>\n\n\n\n<p>\u2022 What can explain the differences among the illustrations?&nbsp;<br><\/p>\n\n\n\n<p><strong>5. <\/strong>Using what you learned by watching the film, check the order in which you arranged the illustrations. Change the order as necessary. Once you are satisfied that you are correct, fill out the new data table, recording the counts in order of occurrence.\u00a0 <\/p>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr><td>Time<\/td><td>Location A&nbsp; Light<\/td><td>Location A Dark<\/td><td>Location B Light<\/td><td>Location B&nbsp; Dark<\/td><\/tr><tr><td>Oldest \u2013 First<\/td><td><br><\/td><td><br><\/td><td><br><\/td><td><br><\/td><\/tr><tr><td>Second<br><\/td><td><br><\/td><td><br><\/td><td><br><\/td><td><br><\/td><\/tr><tr><td>Third<br><\/td><td><br><\/td><td><br><\/td><td><br><\/td><td><br><\/td><\/tr><tr><td>Most Recent &#8211; Fourth<\/td><td><br><\/td><td><br><\/td><td><br><\/td><td><br><\/td><\/tr><\/tbody><\/table>\n\n\n\n<p><strong>6. <\/strong>Use colored pencils to prepare a bar graph based on the data that shows the distribution of the mice at locations A and B through time. Be sure to provide an appropriate title for the graph, and titles and labels for the <em>x- <\/em>and <em>y-<\/em>axes. You may record all of your data for each time period (A and B) on one bar graph or split A and B and make two graphs.<\/p>\n\n\n\n<p><strong>QUESTIONS&nbsp;<\/strong><\/p>\n\n\n\n<p><strong>1. <\/strong>Explain why a rock pocket mouse\u2019s color influences its overall fitness. Remember that \u201cfitness\u201d is defined by an organism\u2019s ability to survive and produce offspring.&nbsp;<\/p>\n\n\n\n<p><strong>2. <\/strong>Explain the presence of dark-colored mice at location A. Why didn\u2019t this phenotype become more common in the population?&nbsp;<\/p>\n\n\n\n<p><strong>3. <\/strong>Write a scientific summary that describes changes in the rock pocket mouse populations at location B. Your summary should include&nbsp;<\/p>\n\n\n\n<p>\u2022 a description of how the population has changed over time,&nbsp;<\/p>\n\n\n\n<p>\u2022 an explanation of what caused the changes, and&nbsp;<\/p>\n\n\n\n<p>\u2022 a prediction that describes what the population will look like 100 years in the future. Base your prediction on trends in the data you have organized. You can assume that environmental conditions do not change over the 100 years.&nbsp;<\/p>\n\n\n\n<p><strong>4. <\/strong>Use the data and what you have learned about evolution to explain how mutation is a random process, but natural selection is not random.&nbsp;<br><\/p>\n\n\n\n<p><br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Color variation over time in rock pocket mouse populations. Introduction: [&hellip;]<\/p>\n","protected":false},"author":2457,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-100","post","type-post","status-publish","format-standard","hentry","category-blogs"],"_links":{"self":[{"href":"https:\/\/iblog.dearbornschools.org\/biomeek\/wp-json\/wp\/v2\/posts\/100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iblog.dearbornschools.org\/biomeek\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iblog.dearbornschools.org\/biomeek\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iblog.dearbornschools.org\/biomeek\/wp-json\/wp\/v2\/users\/2457"}],"replies":[{"embeddable":true,"href":"https:\/\/iblog.dearbornschools.org\/biomeek\/wp-json\/wp\/v2\/comments?post=100"}],"version-history":[{"count":1,"href":"https:\/\/iblog.dearbornschools.org\/biomeek\/wp-json\/wp\/v2\/posts\/100\/revisions"}],"predecessor-version":[{"id":101,"href":"https:\/\/iblog.dearbornschools.org\/biomeek\/wp-json\/wp\/v2\/posts\/100\/revisions\/101"}],"wp:attachment":[{"href":"https:\/\/iblog.dearbornschools.org\/biomeek\/wp-json\/wp\/v2\/media?parent=100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iblog.dearbornschools.org\/biomeek\/wp-json\/wp\/v2\/categories?post=100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iblog.dearbornschools.org\/biomeek\/wp-json\/wp\/v2\/tags?post=100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}