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Cards In This Set
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The theory of catatrophism
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States that one worldwide disater led to massive extinction and subsuquent replacement
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According to Lamarck, the characteristics of organisms changed because of
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An innate drive for perfection
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The most important evidence that Darwin used to develop his theory of natural selction came from
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The Galopagos Islands
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Natural selection operates to produce change in
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Populations
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The operation of natural selection depends upon the fact that
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Some individuals have a better chance to produce more offspring
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The word evolution as used in Biology literally means
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Change
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New combinations of genes may be produced by
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All the above
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Introduction of previously non existent genes into a population may be accomplished by
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Non random mating
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The Hardy-Weinberg formula is valuble for the calculation of changes in
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Allele frequencies
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In a population that is in Hardy-Weinberg equilibrium, the frequency of the recessive homozygous genotype is .49. The percentage of the population that is heterozygous is
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42
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The influence of genetic drift on allele frequencies increases as
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Populations size decreases
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The sharp reduction of the gene pool and the numbers of a population through a severe epidemic is an example of
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The bottleneck effect
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Stabilizing selection occurs when
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The extremes of the population has a lesser chance to survive
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In a certain bird species, the clutch size (the number of eggs laid by the female in one breeding season) ranges from 4 to 8 and the most frequent clutch size is 6. This phenomenon is an example of
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Sexual selection
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Directional selection occurs when
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The environment controls which organism will survive
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