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10 Cards in this Set
- Front
- Back
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Evolution |
the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth. |
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Variation |
a change or difference in condition, amount, or level, typically with certain limits. |
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Adaptation |
a change or difference in condition, amount, or level, typically with certain limits. |
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Natural selection |
the main process that brings about evolution. |
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Artificial selection |
The breeding of plants and animals to produce desirable traits. Organisms with the desired traits, such as size or taste, are artificially mated or cross-pollinated with organisms with similar desired traits. |
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Gene flow |
the transfer of alleles or genes from one population to another. |
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Genetic drift |
variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce. |
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Speciation |
the formation of new and distinct species in the course of evolution. |
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Bottleneck effect |
Genetic drift can cause big losses of genetic variation for small populations. |
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Founder effect |
the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population. |
