The HbS allele increased in frequency in West African populations due to which of the following?
a. sickle-cell anemia
b. genetic drift
c. migration
d. increased mutation rates
e. natural selection
e
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For any demand curve, the marginal revenue is ________ when the demand is ________.
A) negative; elastic B) positive; inelastic C) positive; elastic D) negative; unit elastic
Primatology is a specialty within
A. linguistic anthropology. B. biological anthropology. C. cultural anthropology. D. applied anthropology. E. anthropological archaeology.
anatomical changes in hominins indicative of habitual bipedal locomotion include
What will be an ideal response?
While the vertical excavation strategy at Gatecliff was designed to clarify chronology, the horizontal excavation strategy was designed to
a. expose living floors. b. reinforce the artifact typologies in use at the time. c. clarify the site's stratigraphy. d. establish the chronology on a larger scale. e. identify the geological composition of the stratigraphy.