#Question id: 4700
#Section 2: Evolution
Which of the following is not an observation or inference on which natural selection is based?
#Question id: 4703
#Section 2: Evolution
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: 4705
#Section 2: Evolution
Darwin and Wallace's theory of evolution by natural selection was revolutionary because it ________.
#Question id: 4706
#Section 2: Evolution
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
#Section 2: Evolution
For which one of the following observations were both Lamarck's hypothesis and Darwin's hypothesis in complete agreement?
#Question id: 4708
#Section 2: Evolution
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?