We conduct an experiment tracking the frequency of an allele A found in flour beetles.  Because we’re good scientists, we decide to run our experiment six times.  Each line on the graph represents one of our replicates.  Using what we’ve learned in class, explain what biological phenomenon could have resulted in the graph below.  What can you determine about the size of the population based on the figure?

Which of the following graphs best illustration the relation ship between genetic drift (x) and inbreeding (y)?

Which of the following graphs best illustration the relation ship between population size (x) and fixation of alleles (y)?

__________ have among the highest mutation rates known due to their small genome sizes.

One of the reasons we can have lethal recessives maintained indefinitely in a population is because copies of the allele are hidden inside of __________, and so are immune to selection.

In order to explain the rate of substitution, __________ postulates that you only have to look at the advantageous mutations in a population.

__________ is a reproductive strategy that can increase the frequency of homozygotes, and thus expose deleterious mutations to selection.

We decide to run a population genetics experiment with Drosophila.  However, after the class decides to rebel if I ever discuss Drosophila again, I agree we should run it on wolf spiders instead.  Our gene of interest has a single locus and two alleles, A and a.  Because we are good scientists, we decide to run our experiment eight times, and each time we start with a population of 1,000 individuals.  Our experiment generates the following figure: Using what we’ve learned in class, explain what biological phenomenon could have produced the pattern you see in the graph above and why it produces this pattern.  Make sure to explain how you know this.  What can you determine about the relative fitness of each allele?  How do you know this?

Pea aphids are found in two colors, pink and green.  Imagine that these colors are determined by two alleles at a single locus, where green is dominant to pink.  Consider a population where there are 328 pink aphids out of a total 750 aphids.  If the population is in Hardy-Weinberg equilibrium, how many of the green aphids do you expect to be homozygotes?

If there were a high allele frequency for the CCR5 delta-32 co-receptor, and the rate of infection with HIV was high as well, one would expect the frequency of the CCR5 delta-32 co-receptor allele to __________ over time.