Then,ĭuring translation, the mRNA is used to build a protein. A summary of the processes by which genes (such as Mc1r) are used to make proteins (such as MC1R).įirst, during transcription, cells use the genetic information in DNA to create an RNA message (mRNA). Will then determine how these differences affect the MC1R protein.įigure 2. You will analyze these Mc1r gene sequences to identify differences between the two mouse populations. a population of mostly dark-colored mice living on the Pinacate lava flow (an area covered by dark volcanic.a population of mostly light-colored mice living on light-colored desert rock.Which shows the Mc1r gene nucleotide sequence in mice from two different populations: Your instructor will give you a “DNA Evidence Sheet,” The MC1R protein is encoded by a gene called Mc1r. PART 2: Are There Genetic Differences Between Mice with Different Fur Colors?Ī rock pocket mouse’s fur color is affected by a protein called MC1R, which stands for melanocortin 1 receptor. Mouse A will most likely live for a longer time due to it blending into the environment. How long does a mice with no genetic mutations survive in a black rock area and How long does a mice with genetic mutations to survive in a more sandy area. Predict how likely each mouse is to survive in the environment where they live.īioInteractive Published April 2022 They are either out of place or in place due to there color. What are two scientific questions you have about your observations of these images? What do you notice about the four images in Figure 1? Four different rock pocket mice living in their natural environments. What Causes Different Fur Colors? Student Handoutįigure 1. Observations, ask questions, and make predictions.īioInteractive Published April 2022 Activity Student Handout What Causes Different Fur Colors? PART 1: How Are Rock Pocket Mouse Populations Different?įigure 1 shows images of rock pocket mice in different environments.
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