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26 Cards in this Set
- Front
- Back
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those structures that are not functional but were operation before evolution |
Vestigial Structures |
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those structures that are similar in function, not origin |
Analogous Structures |
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those structures that are from the same origin, not necessarily the same function |
Homologous Structures |
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Fossils |
Paleontology |
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Natural Selection |
1. Heritable Variations 2. More individuals produced that the environment can support 3. Adaptive characteristics enable survival 4. Increasing proportion have adaptive characteristics. 5. Population adapts to local environment |
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those organisms that will fit into an environment |
adaptation |
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a small change in a species |
Microevolution |
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a large change in a species |
Macroevolution |
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small isolated populations differ from others |
Gene Flow and Drift |
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mating on physical characteristics |
Nonrandom and Assortative Mating |
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reproductive isolation of individual survivors |
Bottleneck and Founder Effect |
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movement |
Migration |
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one extreme phenotype becomes the normal |
Directional |
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the elimination of the extreme phenotypes from a bell curve |
Stabilizing |
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the extreme phenotypes become the normal |
disruptive |
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species cannot mate because of physical barrier |
Habitat Isolation |
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same area but different portions of the environment |
Ecological Isolation |
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different breeding seasons |
Temporal Isolation |
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different courtship rituals |
Behavioral Isolation |
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different parts aren't acceptable |
Mechanical Isolation |
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gametes are not compatible |
Gamete Isolation |
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organism mates but during development differentiation is not compatible |
Zygote Mortality |
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because of different chromosome number hybrids are sterile |
Hybrid Sterility |
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Hardy Weinberg Assumptions |
The size of the population is very large or infinite Individuals mate at random No mutation No immigration or emigration No natural seletion |
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Darwwin's Finches |
the beak size for the food involved on the Galapagos Islands |
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Preserving Endangered Species |
Habitat Restoration Captive Propagation Sustaining Genetic Diversity Preserving Keystone Species |
