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Lab 15 Population Genetics Lab Report Experiment 1: Genetic Variation Procedure: 1. Pour 50 blue beads and 50 red beads into a 250 ml beaker. Without looking, select 50 beads from the 250 mL beaker, and place them in a 100 mL beaker. Label this beaker as Beaker #1. 2. Pour 50 green beads and 50 yellow beads into a second 250 mL beaker. Without looking, take 20 beads from the 250 mL beaker, and place them in the other 100 mL beaker. Label this beaker as Beaker #2. 3. Record your findings on the questions below. Note: When done, return beads to their respective beakers (#1 or 2) for use in the next experiment. After completing Experiment 1 answer the following questions 1. What is the gene pool of beaker #1?
2. What is the gene pool of beaker #2?
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3. What is the gene frequency of beaker #1?
4. What is the gene frequency of beaker #2?
5. What can you say about the genetic variation between these populations?
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Experiment 2: Genetic Drift Genetic drift , the variation in the gene pool and/or gene frequency of a population, can result from a variety of stochastic (random) events. Consider the following population of butterflies that has half of its habitat destroyed by wildfire (Figure 3): The remaining population has 50% of the initial gene pool (two colors), and the gene frequency is different. As these individuals reproduce, their offspring will no longer reflect the original population.

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