________ is demonstrated by the example that the heterozygote HbS HbA, one sickle-cell allele and one normal one, was maintained in some populations as the fittest phenotype for a malarial environment.
A. Recombination
B. Genetic drift
C. Balanced polymorphism
D. Phenotypical adaptation
E. Mutation
Answer: C
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A territory under immediate control of a nation-state is called a:
A) department. B) province. C) state. D) colony. E) protectorate.
Which of the following statements is NOT true about lemur-like adapoids?
a. They are the best known of the Eocene euprimates. b. They have a primitive dental formula (2.1.4.3). c. Most prominent families are the notharctids, adapids, amphipithecids. d. They can only be found in Africa. e. They belong to the genus Cantius.
Examine the following sentence: We need to get started on dinner. This sentence is an example of a(n) ___________ directive
A hearer-oriented B speaker-oriented C speaker- and hearer-oriented D group-oriented E impersonal
Which statement about polygyny in Africa is FALSE?
a. Polygyny is very rarely practiced today. b. Some traditional women support it. c. Men generally view polygyny more positively than women do. d. Opposition to polygyny today comes from younger, well-educated women. e. Many traditional African men today are under pressure by Christian churches to give up polygyny.