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| traits that some organisms possess give them an advantage in the "struggle for existence" |
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| system of naming organisms that was first derived by Linnaeus |
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| everything that organisms need, from food and water to available mates, is limited, resulting in intense struggle within populations |
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| group of organisms that share a common ancestor and a group of "derived characters" |
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| a series of 2-choice questions that can be used to classify organisms |
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| probable reproductive success |
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Definition
| the complete set of physical remnants of past organisms |
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| comparing the DNA sequences of organisms in the same family shows similarities suggesting that they share a more recent common ancestor than organisms in other families |
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Definition
| the environment tends to remove unfit individuals |
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Definition
| most organisms havbe a "biotic potential" far greater than the actual number of offspring that they leave |
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| over time, the accumulation of small changes can result in the formation of new types of organisms |
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Definition
| mutations result in new phenotypes |
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Definition
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| indicates a common ancestor |
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