Glencoe Biology

Section 3: Shaping Evolutionary Theory

Self-Check Quizzes

1
Population decline causes an extreme genetic drift called a ____.
A)nonrandom mating
B)founder effect
C)bottleneck
D)stabilizing effect
2
What occurs when average traits benefit a population rather than extreme traits?
A)unnatural selection
B)directional selection
C)disruptive selection
D)stabilizing selection
3
What has occurred when fertilization produces a hybrid offspring that cannot develop or reproduce?
A)prezygotic isolation
B)postzygotic isolation
C)non-reproductive isolation.
D)speciation
4
What evolutionary phenomena has occurred in these fishes?

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A)adaptive radiation
B)coevolution
C)cloning
D)dependent evolution
5
Which of these does not support the theory of gradualism?
A)Evolution proceeds in small steps.
B)Evolution is a dynamic process.
C)Fossil records contain abrupt transitions.
D)Evolution may take millions of years.
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