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Question 1.Question 2.Question 3.Question 4.

 In total, how many plant populations were established in this experiment? In each of these populations, what was the initial frequency of each plant genotype?

 Did evolution occur in the control populations? If so, what factor or factors may have caused evolution by natural selection in these populations? Explain your answer.

 Did evolution occur in the populations exposed to the generalist herbivore? If so, what factor or factors may have caused evolution by natural selection in these populations? Explain your answer.

 Compare results for the control and generalist herbivore treatments. Why do you think the experiment showed the results that it did?

Plant Genotypes Suppose the researchers conduct another experiment to investigate whether a generalist herbivore can affect the natural selection of a plant species. They establish ten replicate populations of the plant and expose each to two experimental treatments: a control (no herbivore) and grazing by a generalist insect herbivore. Each replicate population is initiated with equal proportions of 15 natural genotypes. The experiment is conducted for five generations. At the end of the experiment, the frequencies of all surviving genotypes are determined and are shown in the table. Cl Frequency (%) of surviving plant genotypes Treatment 1 2 3 4 6 7 89 10 1 12 13 14 15 Control 6.2 6.7 6.4 6.8 6.5 6.7 6.6 6.7 6.5 6.4 6.8 6.5 6.7 6.7 6.4 Generalist herbivore 6.5 6.6 6.6 6.9 6.8 6.5 6.6 6.6 6.7 6.7 6.5 6.5 6.5 6.7 6.3

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Subject: Biology, Ecology, Science

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