In the context of social groups, dominance hierarchies
a. are maintained by females only
b. are maintained by males only
c. are not present in any primate species
d. impose a certain amount of order within the group
e. have not been studied by primatologists
d
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Ancient anthropoids began to have fewer offspring that required longer and more attentive care, which selected for
A. pair bonding. B. a greater capacity for brachiation. C. a diet focused on nuts and tubers. D. increased reliance on arboreality (life in trees), which protected offspring from predators. E. support from a social group.
Co-marriage is also known as _________________
Fill in the blank(s) with correct word
Sahelanthropus has an unusual combination of characteristics, including
a. a small braincase and huge browridges. b. a large braincase and huge browridges. c. a small braincase and small muscle attachments in the rear of the cranium. d. a small vertical face and small browridges. e. a large face and small dentition.
Which of the following statements about families is false?
a. They provide emotional support for members. b. There is economic cooperation among members. c. Child rearing and socialization are functions of families. d. Members must occupy the same household or they are not considered families.