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Question
Johann Friedrich Blumenbach categorized humans into the following racesa. Negroids, Caucasoids, and Mongoloids.
b. Mongoloids, Negroids, Inuit, and Caucasoids.
c. Mongoloids, Malays, Ethiopians, American Indians, and Caucasoids.
d. Mongoloids, Negroids, Malays, Europeans, and Caucasoids.
Answer
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Related questions
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b. only food-sharing among related individuals.
c. behaviors that increase inclusive fitness of the donor.
d. the selection of nonrelated individuals as mates.
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a. high-quality food provides energy and protein that are readily digestible.
b. high-quality food is high in nondigestible cellulose such as that found in mature leaves.
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d. both a and c.
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The higher the rank of a female primate, the
a. lower her access to resources and the lower the survival rate of her offspring.
b. lower her access to resources and the greater the survival rate of her offspring.
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d. greater her access to resources, which results in higher birth rates.
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Discuss anatomical characteristics that relate to primates' arboreal adaptation.
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a. only humans
b. pottos, lories, and other similar species
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d. none of the above
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Relative to other primates, prosimian adaptations include
a. an enlarged olfactory bulb and enlarged scent glands.
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c. reduced number of teeth.
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a. invest less in their offspring than do many other mammals.
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a. The population size will rapidly increase because women show greater fitness.
b. The population may remain the same or decrease due to lowered birth rate of women.
c. The population will remain the same because gendered difference in workload has no relationship to fluctuations in population size.
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b. a growth spurt.
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Q:
R. C. Lewontin found that human "races" have no taxonomic significance. He demonstrated this
a. through research indicating that most genetic variation is found among human races.
b. through research indicating that most genetic variation is found across human populations.
c. through the examination of variation in multiple human skull characteristics.
d. through research that examined genetic diversity across different species of mammals.
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According to the text, females are less able to tolerate heat than males becausea. males have a higher body fat content. b. females have a higher body fat content. c. females are shorter.d. males sweat more.
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a. races account for only a small amount of biological variation.
b. the distribution of biological traits follow a cline.
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Why is the incidence of sickle-cell anemia an excellent example of a "balanced polymorphism," in which two or more alleles are maintained by natural selection in a population?