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- In the Lycoisidae family of spiders, it is common for males to court females by offering a prey wrapped in silk and mating occurs while the female consumes the gift. This is an example of which hypothesized mechanism of sexual selection?
- Which statement best summarizes the Supreme Court's current interpretation of the Eighth Amendment as it applies to the death penalty?-The death penalty is constitutional, but should only be applied in the most extreme crimes.-The death penalty violates the equal protection clause of the Fourteenth Amendment.-The death penalty is inherently cruel and unusual punishment.-The death penalty is constitutional, and states should have wide latitude in applying it.
- 19. A population of dolphins is undergoing stabilizing selection for intermediate lung capacity. What will happen to this population over time?
- Which of these terms is associated with traits that share common ancestry?
- . Imagine that part of a population of South American finches is blown by a storm onto an island far offshore and manages to survive and reproduce there, establishing a new population. After 10,000 years, climate change results in lower sea levels and the reconnection of the island with the mainland. Members of the formerly isolated island finch population can now interact freely with members of the original mainland population. Which of the following observations would lead you to conclude that the island finch population had evolved into a distinct species, according to the biological species concept?
- In 1830 Silvereye birds colonized the South Island of New Zealand from Tasmania. The population later continued to spread as depicted on the map below. A researcher analyzed the genetic sequences of each population, displayed in the graph below. Graph legend: ML = mainland, T = Tasmania, SI = South Island, CI = Chatham Island, PN = Palmerstown North, A = Aukland, NI = Norfolk Island 18. Which of the following conclusions is best supported by the data? Allelic diversity...
- What determines whether a trait is a synapomorphy (shared derived trait) or a symplesiomorphy (shared ancestral trait)?
- 17. Gall flies lay their eggs in developing shoots of the goldenrod plant. The larvae produce chemicals that cause the plant tissue to swell into a mass called a gall. The size of the gall depends on the size of the larvae, which is genetically-based and variable. There are 2 main predators of gall fly larvae in the galls. Downy woodpeckers attack the largest galls and feed on those larvae inside. Parasitic wasps lays its own eggs inside the smallest galls, and the larvae that hatch parasitize and kill the gall fly larvae. Selective pressure from predators works against fly phenotypes that produce galls at both extremes, large and small. As a result, flies that produce middle-sized galls become more common. What type of selection is being described?
- You are researching the effects of water pollution on Stickleback fish. You collected data before and after the pollution of the lake. Answer the next 2 questions based on this scenario. 2. Which of the following statements best represents an observation from your study?
- Orange sulfur butterflies (Colias eurytheme) typically live up to 4 weeks as adults and females lay hundreds of eggs. Imagine a mutation that causes females to produce eggs more quickly. However, producing so many eggs requires a lot of resources and the mutation also decreases lifespan. A researcher measured the number of eggs produced each week by 20 females, 10 with the original trait and 10 with the mutated trait. On the right is a table showing the average number of eggs produced each week for each group. 13. Which of the following is the best prediction given this data?
- A small number of minks float from the mainland to an island and establish a new population on the island. Migration is exceedingly rare so the populations evolve separately for a long period of time and become genetically differentiated. After a thousand years, a land bridge forms between the mainland and the island that allows minks to migrate to the island and breed with the island population. If a continual, large migration of minks to the island happens over many generations, how will the allele frequencies of the island population change?
- Which statement is true of the relationship between the democratic features of American government and constitutional limits on what government may do?-They always produce conflict.-They sometimes produce conflict.-They always reinforce each other.-They do not affect each other.
- Which of the following is an example of intrasexual selection? A. Male wolf spiders provide nuptial gifts to females as they mate
- Nile perch were introduced to lakes containing native populations of cichlids. The Nile perch are predators of cichlids and the two species coexist in lakes where perch were introduced. A biologist studying the lakes observed the cichlid populations in the lakes containing Nile perch and nearby lakes that did not have Nile perch. The biologist collects the following data. Answer the next two questions based on this dataset.Lake Average caudal fin length With Nile perch 4.5 cm Without Nile perch 3.3 cm
- The number and brightness of eyespots on a peacock's train is highly variable. Where did this variation come from?
- Which of the following conditions is necessary for speciation to occur?
- A female guppy chooses to mate with the male with the brightest orange coloration because the bright coloration indicates the male is successful at obtaining plenty of nutrients and has no parasites. This is an example of which hypothesized mechanism of sexual selection?
- Trillium plants grow in fields where taller height provides greater access to sunlight by escaping shade of taller plants. Over 5 years, the average height of trillium in a field increases. What is most likely occurring in this scenario?
- Two populations of chipmunks live in similar habitats and face similar selective pressures. Which evolutionary factors cause these two populations to become more genetically differentiated (i.e., less similar)?
- Which of the following acted on cichlid caudal fin length with Nile perch present?