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8 Cards in this Set
- Front
- Back
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population
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a group of organisms of the same species living in a particular geographical region
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evolution
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a genetic change in a population
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fixation
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when an allele's frequency in a population reaches 100%
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genetic drift
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a random change in allele frequencies in a population
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founder effect
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a small number of individuals may leave a population and become the founding members of a new, isolated population.
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bottleneck
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when a famine, disease, or rapid environmental change causes the deaths of a large proportion of individuals in a population
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migration (gene flow)
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the movement of some individuals of a species from one population to another
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natural selection
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1. there must be variation for the trait within a population
2. that variation must be heritable 3. individuals with one version of the trait must produce more offspring than those with a different version of the trait |
