The organisms on the left side of the tree are more closely related to each other than to those on the right side of the tree. Which of the following statements best describes the relationships among these organisms?
A population of frogs in an isolated area experiences a sudden increase in genetic diversity. Which of the following is the most likely explanation for this observation?
If an individual is heterozygous for a gene that affects flower color, what will be the expected ratio of flower color phenotypes among the offspring?
The data from which of the following sources would be most useful in predicting the potential impact of a new invasive species on an ecosystem?
Which of the following would most likely be a limitation of the scientists’ approach to determining the evolutionary relationships among the populations?
The scientists can best determine whether the new trait evolved independently in each population by determining which of the following?
Which of the following statements provides the best explanation for the main trend shown in the graph above?
What is the main way in which the cells of the leaves of the small evergreen trees differ from the cells of the leaves of the large trees?
Initially, which of the following isolating mechanisms is likely to have been the most important in preventing gene flow between the two populations of Rhagoletis?
