A shopkeeper who refuses to hire Koreans is guilty of discrimination

Hamilton's breakthrough in explaining altruism from a biological perspective

a. rested on his taking into account the viewpoint of the genotype rather than that of the organism. b. involved the argument that natural selection favors personal fitness. c. is based on the idea that altruistic acts are just as often aimed at friends and acquaintances as they are at relatives. d. rests on the principle of reciprocation. e. is based on the argument that altruists will have greater reproductive success.

As soon as 16-year-old Mia comes home from school, she is on the phone talking to friends, and her parents literally have to pull her off of it to leave her room for dinner and at nighttime. This shows that Mia has a common adolescent need for

a. peer relationships. c. family-oriented relationships. b. societal relationships. d. no relationships.