Samantha and her friend Felicity are extremely close, and tr…

Samantha and her friend Felicity are extremely close, and treat one another like sisters. When Felicity was broke, for example, Samantha let her stay at her apartment for several months without charging rent. When Samantha was in the hospital for a knee surgery, Felicity brought her movies, food, and other gifts nearly every day. Social psychologists would say that Samantha and Felicity have a(n) ____ relationship.​

If unable to see this image, use this link. The phylogenetic…

If unable to see this image, use this link. The phylogenetic tree, above, shows the evolutionary relationships of four animals.  The Baboon, Brushtail Possum, and Spotted Cuscus have opposable thumbs.  The Tarsier does not have opposable thumbs. Choose the answers to the following questions using the dropdown menus. ============================================================ The opposable thumbs of the Baboon is an example of convergent evolution in relation to the opposable thumbs of the Brushtail Possum and Spotted Cuscus. Did the common ancestor at Node 1 have opposable thumbs? The opposable thumbs of the Brushtail Possum and the Spotted Cuscus are homologous traits.  Did the common ancestor at Node 3 have opposable thumbs? Should opposable thumbs be mapped on the tree at the place labeled a? Should opposable thumbs be mapped on the tree at the places labeled b and c?