18. Based on what you know about natural selection, what would you expect to happen to genetic variation within the population if you increase the relative fitness of a particular genotype?

1. Based on the class data from Experiment I, for each of the three populations, describethe effect of population size on genetic diversity over time. Your answer should touchon the magnitude of any genetic changes through time for each of the three populationsizes.

e. The frequencies of the genotype "Aa." f. The frequency of the recessive phenotype if "A" is completely dominant over "a." g. The frequency of the dominant phenotype if "A" is completely dominant over "a".

2. Dwarf lupine, a California wildflower, commonly has blue flowers, but some plants produce pink flowers. Flower color is controlled by one gene with blue dominant and pink recessive. One population has 3,291 plants with blue flowers and 25 plants with pink flowers, resulting in a total of 3,316 plants. Assuming that the population is in Hardy-Weinberg equilibrium, what is the expected number of plants that are heterozygous? Do you understand how to calculate the answer as being 526 plants?