Because sickle cell anemia is an autosomal recessive disease, there is a __________% chance that the child of two carriers will have the disease
a. 100
b. 50
c. 25
d. 0
Correct Answer: c
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Which of these nations has a lower homicide rate than the United States?
A) Hong Kong B) Jamaica C) El Salvador D) Venezuela
Which statement about nonhuman primate calls is NOT true?
A. Nonhuman primate calls are dependent on their sophisticated vocal tract. B. Nonhuman primate calls occur in response to environmental stimuli. C. Nonhuman primate calls are automatic and cannot be combined. D. Nonhuman primate call systems produce a limited number of sounds. E. Nonhuman primate calls vary in intensity and duration.
Çatalhöyük is:
a. an urban area in the Fertile Crescent where agriculture first developed b. an urban center that developed from a very small farming community c. the first urban center ever developed, and it subsisted solely on trade d. a highly populated town that never developed characteristics of urban centers
Which of the following is a difference between Oldowan and Acheulean tools?
a. Oldowan tools were made from stone. b. Oldowan tools were flaked. c. Acheulean tools were associated with H. erectus. d. Acheulean tools were bifaced.