Claytonia virginica is a woodland spring herb with flowers t…

Claytonia virginica is a woodland spring herb with flowers that vary from white to pale pink to bright pink. Slugs prefer to eat pink-flowering plants over white-flowering plants, and plants experiencing this severe herbivory are more likely to die. The bees that pollinate this plant also prefer pink to white flowers, so Claytonia with pink flowers have greater relative fruit set (a measure of fitness) than Claytonia with white flowers. A researcher observes that the percentage of different flower colors remains stable in the study population from year to year. With no other information, if the researcher removes all slugs from the study population, what do you expect to happen to the distribution of flower colors in the population over time?

People with cystic fibrosis (CF) are homozygous recessive fo…

People with cystic fibrosis (CF) are homozygous recessive for mutations in a gene known as CFTR. These mutations cause the CFTR protein to become dysfunctional, and it is unable to move chloride to the cell surface. Ultimately mucus can build up in organs, and in the lungs, the mucus clogs the airways and traps bacteria, leading to infections, inflammation, and respiratory failure. In a human population, if 9 in 10,000 newborn babies are born with CF, what are the expected frequencies of the dominant (A1) and recessive (A2) alleles according to the Hardy-Weinberg model in that population?

Maurice is a school psychologist who used to be optimistic a…

Maurice is a school psychologist who used to be optimistic and very proactive at work. Recently, he has become very cynical toward his clients and “blames the victims” for their own difficulties. Maurice is likely experiencing which form of the developmental model of burnout?

True or False. A test administered to a group of 5-year-old…

True or False. A test administered to a group of 5-year-old children classifies 10 percent as “at risk” for learning difficulties. By measuring the extent to which the test correctly predicted classification at the end of the third grade, you determine the predictive power of the test.

Ryder is trying to follow the American Psychological Associa…

Ryder is trying to follow the American Psychological Association’s ethical guidelines for working with ethnically, linguistically, and culturally diverse populations. His new assignment is with a client who requests that Ryder speak in French. Ryder does not speak French. What is Ryder to do?