Humans may cope with the environment with
a. cultural adaptations
b. genetic adaptations
c. acclimatization
d. all of these
d. all of these
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G. Rollefson and I. Kohler found that in the Levant around 6,000 years ago the early civilization collapsed because
A) salination of farmland B) of a change in rainfall C) lack of lime plaster D) disappearence of antelope herds E) extensive felling of woodland
The region from central Mexico to Costa Rica is referred to as _______________
Fill in the blank(s) with correct word
Why does exogamy, the practice of seeking a husband or wife outside one's own kin group, have adaptive value outside of biological concerns?
A. It impedes peaceful relations among social groups and therefore promotes population expansion. B. It increases the likelihood that disadvantageous alleles will find phenotypic expression and thus be eliminated from the population. C. Exogamy is not adaptive; it is just a cultural construction. D. It was an important causal factor in the origin of social stratification. E. It creates new social ties and alliances, providing access to more resources and social networks.
Match each type of selection with its definition:
1. directional selection 2. disruptive selection 3. stabilizing selection selection favoring a particular direction selection against both extremes both extremes are favored