What is the only source of new genetic material in any population?
a. ?Genetic drift
b. ?Natural selection
c. ?Founder effect
d. ?Mutation
e. ?Migration
d
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Ideally, taxonomic classification
a. reflects evolutionary relationships. b. is based on the presence of acquired characteristics. c. is always based solely on between-species behavioral similarities. d. reflects the current geographic distribution of species. e. is only applicable to nonhuman species.
Why might a superior innovation not be adopted?
A) The costs of adopting the new innovation might exceed the benefits. B) People may not be intelligent enough to master the new technology. C) The habits of the old system are more important than finding something that works better. D) New innovations are generally viewed suspiciously for a while.
The powerful healing force recognized by the Ju/'hoansi is called:
a. boa b. manitou c. n/um d. mana
The ______ epoch has been called the "Ice Age."
a. ?Eocene b. ?Pliocene c. ?Miocene d. ?Pleistocene e. ?Paleocene