Which of the following contributes most to skin color?
a. Carotene
b. ?Melanin
c. ?Short-term acclimatization
d. Hemoglobin
e. ?Vitamin D
b
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Most fossils of the genus Homo found in Africa and Eurasia dating from about 500,000 to 100,000 years ago exhibit all of the following morphological changes from the characteristic patterns of Homo erectus EXCEPT:
A. a less prognathic face. B. a large supraorbital torus. C. reduced occipital torus. D. a larger and slightly higher cranial vault.
Gregor Mendel's work, published in 1866, was:
A. not generally known until 1900 B. immediately accepted by Mendel's contemporaries C. footnoted extensively by Charles Darwin in The Origin of Species D. used by Francis Galton in his studies on human heredity
Anatomically modern Homo sapiens fossils from Africa have been dated to about _____ years ago
a. 100,000-70,000 b. 200,000-100,000 c. 195,000-80,000 d. 35,000 e. 65,000
Sociolinguistics concentrates on variations in language that _______
a. are likely to become extinct in the next 50 years b. do not change over time c. have a majority of bilingual speakers d. depend upon the social situations or contexts in which the speaker operates e. are caused by colonialism or political systems of oppression