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15 Cards in this Set
- Front
- Back
A phenomenon by which genetic drift can occur; a sudden reduction in population size (often due to famine, disease, or rapid environmental disturbance) that can lead to changes in allele frequencies of a population.
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Bottleneck Effect
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A mechanism of evolution that occurs when there is heritable variation for a trait and individuals with one version of the trait have greater reproductive success than individuals with a different version of that trait
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Natural Selection
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The point at which the frequency of an allele in a population is 100% and, therefore, there is no more variation in the population for this gene
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Fixation
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The transmission of traits from parents to offspring via genetic information; also known as heritability
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Inheritance
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A random change in allele frequencies over successive generations; a cause of evolution
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Genetic Drift
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The situation in which individuals have greater reproductive success than other individuals in a population
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Differential Reproductive Success
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A change in the allele frequencies of a population due to movement of some individuals of a species from one population to another, changing the allele frequencies of the population they join; also known as migration
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Gene Flow
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A phenomenon by which genetic drift can occur; the isolation of a small subgroup of a larger population which can lead to changes in the allele frequencies of a population because all the descendants of the smaller group will reflect the allele frequencies of the subgroup, which may be different from those of the larger source population.
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Founder Effect
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The process by which natural selection favors traits, such as ornaments or fighting behavior, that give an advantage to individuals of one sec in attracting mating partners.
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Sexual Selection
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The transmission of traits from parents to offspring via genetic information; also known as inheritance.
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Heritability
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Any characteristic or feature of an organism, such as red petal color in a flower.
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Trait
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A group of organisms of the same species living in a particular geographic region.
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Population
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An alternation in the base-pair sequence of an individual's DNA; may arise spontaneously or following exposure to a mutagen.
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Mutation
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A change in the allele frequencies of a population due to the movement of some individuals from one population to another.
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Migration
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A change in allele frequencies of a population.
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Evolution
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