How many chromosome pairs occur in a normal human somatic cell?
a. 24
b. 23
c. 26
d. 25
e. 22
b
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The explanations given in this chapter for the differences in and distribution of skin color in populations around the world are examples of
A. punctuated equilibrium. B. the social construction of so-called scientific categories. C. attempts at classifying human groups into clines. D. explanatory approaches to human biological diversity. E. how having a political interest in justifying racial policies interferes with objective science.
Dark skin is found in populations near the equator. Why?
a. It protects from frostbite. b. It protects from overexposure to ultraviolet radiation. c. It helps prevent rickets. d. It protects from the damaging effects of UV radiation on folate. e. It increases the skin's exposure to ultraviolet radiation.
First-cousin marriage causes significant increases in genetic deficiency
a. True b. False Indicate whether the statement is true or false
Which of these is an argument AGAINST the validity of the Sapir-Whorf hypothesis?
a. Worldviews change much more quickly than language. b. Perceptions of time and space are culturally universal. c. Each person develops his or her own individual understanding of reality. d. All of these are arguments against the validity of the Sapir-Whorf hypothesis.