Population size: Assess how population size will affect allele frequencies over
ID: 257826 • Letter: P
Question
Population size: Assess how population size will affect allele frequencies over time. What do you predict will happen? Will small populations differ from large populations? Why or why not? Test your predictions with the following simulation. Be sure the initial frequency of A1 is set to 0.50. Set population size to 10 and . Clear the screen, reset the population size to 100, and record the ending .Calculate the average change in allele frequency and average generations to . In Excel, create a graph which shows the relationship between population size record the ending frequency of A1 and the number of generations until fixation occurs (if it does) for ten runs in Table 1 frequency and fixation times for ten more runs. Repeat this with the population size set to 1000, 10000, 100,000, and infinity. fixation for each population size in Table 2 and average change in allele frequency over 500 generations. (Be sure to scale the x-axis properly!) a) Is evolution occurring in these populations? How do you know? b) What is the relationship between the size of a population and the amount of change in allele frequency that tends to occur? What does this tell you about the relationship between population size and evolution?Explanation / Answer
a)
b)