Although culture often acts like an umbrella to protect genes from the selective pressures of the environment, it also brings about its own selective pressures. For example, in populations with cultural practices in which fresh milk is an important part of the diet, the gene for the enzyme lactase:
a. is absent.
b. has a very low frequency.
c. has a very high frequency.
d. is linked with the gene for skin color.
e. has no adaptive advantage.
c
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________ has argued that there is a connection between body temperature and bipedalism in that a biped is exposed to less of a heat load when the sun is directly overhead
Fill in the blank(s) with correct word
In a band society, which of the following is most likely to make you a leader?
a. Inheritance b. Elections c. Authority from God d. Skill in warfare
Explain how evolutionary relationships among organisms are determined. In your answer, be sure to use and define terms such as morphology; phylogeny; and shared, ancestral, and derived traits.
What will be an ideal response?
Though pastoral nomadic peoples are often blamed for causing environmental degradation, the fault is often not theirs. Rather, in areas such as sub-Saharan Africa it is caused by:
a. unrestricted development. b. a tremendous increase in tourism. c. the ever-burgeoning use of off road vehicles. d. governments that restrict their movements causing overgrazing. e. global warming.