1-1_Natural_Selection_Student.docx - Activity 1 Natural...

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Activity 1: Natural Selection of AllelesGetting Started:-Type all your answers into this worksheet in blue text. This will make grading much quicker.- Download the following three model files: Simple Birth Rates Fixation 2.0.nlogoSimple Death Rates Fixation.nlogoRandom Mating Diploid Selection.nlogoThese are located in Canvas, where you found this same worksheet. Make sure to savethem somewhere on your computer where you can find them later (e.g. Desktop)!- Go to the following website: . Please use the NetLogo Web version to run the simulations. You might encounter issues if you run them on the downloaded program.Exercise 1: Birth RatesIn the top right corner click on “Choose File” to Upload a Model. Find the Simple Birth Rates Fixation 2.0.nlogo where you saved it and upload it to NetLogo.Click on the “Model Info” tab at the bottom of the page to access important information about the simulation and answer the following questions:1.What do the red and blue colors signify? 2.What to the triangles (a.k.a. “turtles” in simulation-speak) signify? 3.What does carrying capacity signify? 4.What causes turtles to “die” in the simulation? 5.Do red and blue turtles have (potentially) different likelihoods of death in this simulation? 6.How does changing the blue-fertility slider affect the simulation?It changes the number of __ offspring ____ produced by each Red_____ turtle in each generation. Let’s look at how strong the difference in birth rate has to be in a small population in
the blue fertility to 2.1 and the red fertility to 2.0 (giving blues a 0.05 reproductive advantage). Start the initial population to be half blue (starting-proportion-blue = 0.5). Run an experiment (at least 10 runs) by clicking on setup, and then run-experiment (which does multiple runs). The results of each experimental run will pop up in the yellow textbox.

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