Question 5: Rearrange the tree so that chimpanzees (Pan) and gorillas are now each other’s closest relatives, and again so that chimps and humans are each other’s closest relatives. How do the tree lengths compare? What do these numbers tell you? Can you make a definitive statement as to which primates humans are most closely related? Why or why not? What could you do to address this issue?

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !