#Question id: 4703
#Unit 11. Evolution and Behavior
Within a few weeks of treatment with the drug 3TC, a patientʹs HIV population consists entirely of 3TC-resistant viruses. How can this result best be explained?
#Question id: 4704
#Unit 11. Evolution and Behavior
About thirteen different species of finches inhabit the Galápagos Islands today, all descendants of a common ancestor from the South American mainland that arrived a few million years ago. Genetically, there are four distinct lineages, but the thirteen species are currently classified among three genera. The first lineage to diverge from the ancestral lineage was the warbler finch (genus Certhidea). Next to diverge was the vegetarian finch (genus Camarhynchus), followed by five tree finch species (also in genus Camarhynchus) and six ground finch species (genus Geospiza). If the six ground finch species have evolved most recently, then which of these is the most logical prediction?
#Question id: 4705
#Unit 11. Evolution and Behavior
Darwin and Wallace's theory of evolution by natural selection was revolutionary because it ________.
#Question id: 4706
#Unit 11. Evolution and Behavior
Which of the following statements best explains why modification or change in an organ or tissue during the lifetime of an individual is not inherited?
#Question id: 4707
#Unit 11. Evolution and Behavior
For which one of the following observations were both Lamarck's hypothesis and Darwin's hypothesis in complete agreement?
#Question id: 4708
#Unit 11. Evolution and Behavior
The following questions refer to the figure below, which shows an outcrop of sedimentary rock whose strata are labeled A-D. If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?