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12 Cards in this Set
- Front
- Back
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Microevolution |
Changes in features or adaptations over a relatively short period Ie altered beak size in finches to take advatage of different seeds and compete more for food |
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What does selection require |
Variation with in a population Differences in reproductive success Variation among individuals must be inherited |
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Selection example |
The G Fortis prefers smaller softer seeds but in time of drought they will eat the tougher ones. The population of birds with smaller beaks decrease |
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Changes in features that enable adaptation over a short period of time is known as |
Microevolution |
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Artificial selection |
Favors individuals with certain phenotypes Ie Lab experiments, agriculture and domestication |
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Artificial selection |
Favors individuals with certain phenotypes Ie Lab experiments, agriculture and domestication |
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Determining relatedness |
Similarities in features adaptation Molecular evidence |
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Phylogeny |
Determination of evolutionry relationships |
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Phylogeny |
Determination of evolutionry relationships |
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Cladograms |
Illustrates evolutionary relationships |
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Fossil evidence |
Preserved remains Dates by radioactive decay A half life is 4.5 billion years |
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Intermediate fossils |
Usually exhibit some traits of ancestors and other defendants
Traits evolve at different rates |
