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Definition
| a change in the collective genetic material of a population |
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Definition
the study of the frequency and interaction of alleles and genes in populations
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Definition
| a graph of the frequency of some variable, a curve that first rises and then falls and thus forms a symmetric bell-shaped curve |
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Definition
| all of the genes of the reproductively active members of a population |
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Definition
| the proportion of gene copies in a population that are a given allele, expressed as a percentage. |
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Definition
| the ratio of individuals with a particular phenotype to the total number of individuals in a population |
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Hardy-Weinberg genetic equilibrium: |
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Definition
the principle that states that the frequency of alleles in a population does not change
over generations unless outside focus acts on the population |
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Definition
| the movement of genes into or out of population due to interbreeding |
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Definition
| the random change in allele frequency in a population |
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Definition
an evolutionary mechanism by which traits that increase the ability of individuals to attract |
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Definition
| a type of natural selection in which the average form of a trait is favored and becomes more common |
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Definition
a type of natural selection in which two extreme forms of a trait are selected
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Definition
| a type of natural selection in which the most extreme form of a trait is favored and becomes more common. |
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Definition
| the formation of new species as a result of evolution |
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Definition
| the study of the structure and form of an organism |
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biological species concept: |
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Definition
the concept that a species is a population of organism that can interbreed but cannot breed with
other population |
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Definition
| the physical separation of population due to geographic barriers that prevent interbreeding. |
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Definition
the inability of members of a population to successfully interbreed with members of another population of
the same or a related species |
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Definition
| a model of evolution in which gradual change over a long period of time leads to biological diversity |
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Definition
a model of evolution in which short periods of drastic change in species, including mass extinctions and
rapid speciation, are separated by long periods of little or no change. |
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