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DO NOT WRITE ON THIS PAGE!!! Due Monday, 4-4-2022!!! Work with a partner. One paper for both partners. Write first and last names of each partner in your answer page! Answer on notebook paper. Natural Selection: PhET Interactive Solutions Part 1 Go to phet.colorado.edu Click on SIMULATIONS and choose BIOLOGY from the drop-down menu. Choose NATURAL SELECTION, click PLAY, AND choose INTRO. Set the environment to winter and add a mate. ***Watch for 6 generations. Describe the result. ***Predict what will happen if a dominant allele for brown fur is introduced. Will there be a different outcome if the allele for brown fur is recessive? Start over and test your hypothesis. Choose winter, Add a dominant allele for brown fur. Add a mate. ***Watch for 6 generations. Describe the result. ***Change the allele for brown fur to recessive and repeat the process for 6 generations. Describe the result. ***Was there a difference in the outcome when comparing the dominant allele to the recessive allele? ***Predict what will happen if there is a change in the environment: Predators move into the environment! Start over and test your hypothesis. Choose winter, Add a dominant allele for brown fur. Add a mate. In generation 2, add predators. ***Watch until the end of generation 4. Press pause and describe the result of adding predators. ***Continue watching until bunnies take over the world. How long did it take? ***Change the allele for brown fur to recessive and repeat the process for 4 generations. Describe the result. ***Continue watching until bunnies take over the world. How long did it take? ***Was there a difference in the outcome when comparing the dominant allele to the recessive allele? Scroll to the bottom of the screen and choose LAB. Predict what might have happened if you had chosen summer instead of winter. Test your hypothesis and describe the results in a paragraph. Be sure to describe HOW you tested your hypothesis. Compare the results to the findings when we tested winter. ***Summarize the activity using ALL of the following terms: genetic variation, reproductive success, selective advantage, natural selection, over production, and allele frequency. DO NOT WRITE ON THIS PAGE!!! Due Monday, 4-4-2022!!! Work with a partner. One paper for both partners. Write first and last names of each partner in your answer page! Answer on notebook paper. Part 2 Click PROPORTIONS. Choose a season: ____________________________ Choose an allele for brown fur: ______________________________ Choose an allele for ears: ______________________________ Choose an allele for teeth: ______________________________ Add a mate. In generation 2, add predators. Watch until the end of generation 6. After each generation, record the proportions for each trait. Describe the final result. Predict what might have happened if you had chosen the other season but kept all other alleles the same. Test your hypothesis and describe the results in a paragraph. Be sure to describe HOW you tested your hypothesis. Compare the results to the findings when we tested the other season. ***Summarize this round of the activity using ALL of the following terms: genetic variation, reproductive success, selective advantage, natural selection, over production, and allele frequency. Part 3 Repeat the steps for the activity above but choose LIMITED FOOD instead (no predators). Click PROPORTIONS. Choose a season: ____________________________ Choose an allele for brown fur: ______________________________ Choose an allele for ears: ______________________________ Choose an allele for teeth: ______________________________ Add a mate. In generation 2, add LIMITED FOOD. Watch until the end of generation 6. Describe the final result. Part 4 Repeat the steps for the activity above but choose TOUGH FOOD instead. Click PROPORTIONS. Choose a season: ____________________________ Choose an allele for brown fur: ______________________________ Choose an allele for ears: ______________________________ Choose an allele for teeth: ______________________________ Add a mate. In generation 2, add TOUGH FOOD. Watch until the end of generation 6. Describe the final result. *** Summarize this round of the activity using ALL of the following terms: genetic variation, reproductive success, selective advantage, natural selection, over production, and allele frequency.
