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| Changes in population, species or groups of species as a result of variation in heritable traits passed on from generation to generation. |
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| describes the detail of how populations of organisms change from generation to generation and how new species originate. |
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| descrides patterns of change in groups of related species over broad periods of geologic time. |
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| Evolutionary relationships among species and groups of species. |
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| Theory that natural selection, also known as "survival of the fittest" was the driving force of evolution. |
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| Provides fossils that reveal the prehistoric existence of extinct species therefore, changes in species and the formation of new species can be studied. |
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| Uses geography to describe the distribution of species throughout enviroments. |
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| reveals similar stages in development among relatated species as a result these similarities help establish evolutionary relationships. |
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| Body parts resemble one another in different species because of Last Common Ancestor. (Ex. Forelimb of cat, human, bat) |
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| Are body parts that resemble one another in different species not as a result of last common ancestor but because they evolved independently as adaptions to their enviroment. (Ex. Fin of a fish) |
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| Eliminates certain individuals with unusual traits, individuals with most common traits are the best adapted. |
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| Favors traits that are at one ectreme end of the spectrum, traits at the opposite end are selected against. |
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| Occurs when the enviroment favors extreme or unusual traits, while selecting against the common traits. |
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| Hardy-Weinberg Equilibrium |
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Definition
- No natural selection
- No mutations
- No gene flow (No Immigration, Emigration)
- Large population size
- Random Mating
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| Begins when a population is divided by a geographic barrier so that interbreeding between the two resulting populations is prevented. |
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| Formation of new species without the presence of geographic barrier. |
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| Rapid evolution of many species from Last Common Ancestor. |
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| Describes two or more species that originate from a common ancestor and become inrceasingly different over time. |
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| Describes two unrelated species that share similar, analogous staits. |
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| Is the "Tit for tat" evolution of one species in response to new adaptations that appear in another species (Predator Prey concept) |
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