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Assignment 2
 

Assignment 2

The following questions regarding Assignment 2 in EvolutionLab are designed to help you understand how environmental changes can result in different modes of natural selection. Working within EvolutionLab, leave all of the other settings at their default values and change the rainfall on Wallace Island to 50 cm/year and the rainfall on Darwin Island to the minimum possible value (0 cm/year). Run the simulation for 300 years Anwer the questions below.
1 .       Look at the plot of beak size over time. What type of selection is taking place on Wallace Island? On Darwin Island? Explain your answer.  



2 .       Using the numbers from the field notes, calculate the average R (the difference in mean beak size from one generation to the next) in the first ten years of the simulation and the last ten years for both populations.  



3 .       Look at the plot of finch population over time. Explain the reason for any differences in population numbers between the two islands.  








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