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12 Cards in this Set
- Front
- Back
Behavioral isolation
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form of reproductive isolation in which two populations develop differences in courtship rituals of other behaviors that prevent them from breeding
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Biogeography
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study of past and present distribution of organisms
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Bottleneck effect
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a change in allele frequency following a dramatic reduction in the size of a population
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Directional selection
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form of natural selection in which individuals at one end of a distribution curve have higher fitness than individuals in the middle or at the other end of the curve
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Disruptive selection
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natural selection in which individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle of the curve
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Evolution
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change over time; the process by which modern organisms have descended from ancient organisms
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Fitness
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how well and organism can survive and reproduce in its environment
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Fossil
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preserved remains or traces of ancient organisms
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Founder effect
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change in allele frequencies as a result of the migration of a small subgroup of population
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Gene pool
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all the genes, including all the different alleles for each gene, that are present in a population at any one time
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Genetic drift
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random change in allele frequency caused by a series of chance occurrences that cause an allele to become more or less common in a population
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Genetic equilibrium
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situation in which allele frequencies in a population remain in the same
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