Term
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Definition
| how populations change under the influence of natural selection and other evolutionary forces |
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Term
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Definition
| how new species & higher taxa are created |
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Term
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Definition
| clusters of organisms in distinct types |
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Term
| Biological Species Concept |
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Definition
| defines a biological species as a group of organisms that interbreed in nature and are reproductively isolated |
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Term
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Definition
| members of a group of organisms do not mate successfully with organisms outside the group |
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Definition
| movement of genetic material within parts of a population or from 1 pop. to another |
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Term
| Ecological Species Concept |
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Definition
| the role of natural selection in creating and maintaining species |
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Term
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Definition
| a population is divided by some type of barrier and different parts of the population adapt to different environments |
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Term
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Definition
| two different morphological changes for the residents and immigrants |
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Definition
| reduce the extent of gene flow |
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Term
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Definition
| selection alone is not sufficient to produce a new species but new species can be formed if selection is combined with partial genetic isolation |
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Term
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Definition
| at habitat boundaries, animals that come from different habitats and have different characteristics will mate |
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Term
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Definition
| strong selection favoring different phenotypes can lead to speciation even when there is no geographic speciation which leads to extensive gene flow |
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Term
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Definition
| a particular way of making a living |
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Term
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Definition
| a single kind of animal or plant diversifies to fill many available niches |
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Definition
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Term
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Definition
| superfamily includes apes & humans |
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Definition
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Definition
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Term
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Definition
| the construction of phylogenies |
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Term
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Definition
| the use of phylogenies in naming and classification |
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Term
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Definition
| characters similar due to convergence |
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Term
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Definition
| similar due to decent from common ancestor |
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Term
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Definition
| one that characterized the common ancestor |
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Term
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Definition
| features that have evolved since the time of the last common ancestor o the species |
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Term
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Definition
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Term
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Definition
| a measure of overal genetic similarity between species |
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Term
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Definition
| genetic distances with a constant rate of change |
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Term
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Definition
| most changes in DNA sequences have little or no effect on fitness, so evolution of this neutral DNA must be controlled by drift and mutation |
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Term
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Definition
| group of closely related species |
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Definition
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Definition
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Term
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Definition
| only descent should matter |
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Term
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Definition
| classification should be based both on descent and on overall similarity |
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