The evolutionary tree below indicates the relationships among different peiriate spocies. On this tree, the labeled borlzontal lines indicate the onigin of sorne primate Q8. Which of the following traits (as labeled on the diagram) is shared by both orangutans and gorillas? Trait R Trait S Trait T Q9. Rhesus monkeys are the last common ancestor of gibbons, gorillas, and humans. True False Q10. Gibbons are more closely related to humans than to mesus monkeys. True.