Biology Unit 3 - Natural Selection
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| artificial selection | the human practice of breeding animals or plants that have certain desired traits
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| heritability | ability of a trait to be passed from one generation to the next
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| natural selection | the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do; a theory to explain the mechanism of evolution
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| fitness | a measure of an organism's ability to survive and reproduce offspring relative to members of a population
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| gene pool | the total set of genes, including all the alleles, that are present in a population at any one point in time
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| allele frequency | proportion of one allele, compared with all the alleles for that trait, in the gene pool
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| normal distribution | a distribution of numerical data whose graph forms a bell-shaped curve that is symmetrical about the mean
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| directional selection | a natural selection process in which one genetic variation is selected and that causes a change in the overall genetic composition of a population
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| stabilizing selection | a type of natural selection in which the average form of a trait is favored and becomes more common
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| disruptive selection | a type of natural selection in which two extreme forms of a trait are selected
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| population | a group of organisms of the same species that live in a specific geographic area
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Created by:
lpgullett
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