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The process by which organisms that are better adapted to their environment survive long enough to produce offspring.

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Organisms with different ancestors become more alike.

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The Differences Between Microevolution and Macroevolution

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The Differences Between Microevolution and Macroevolution

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Microevolution is the evolutionary change within a small species or a small group of organisms. Macroevolution is much bigger than this and takes much longer. Macroevolution is major evolutionary change to a large taxonomic group over a long period of time. An example of microevolution would be a small species of beetles undergoing an evolutionary change. An example of macroevolution would be an entire phylum of animals undergoing an evolutionary change, such as making use for an entirely new body part.

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Two different species evolve similarly because of lifestyle.

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Two or more related species becoming less similar over time.

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Passing on of genetic information, influenced by male competition and female choice.

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Small errors in DNA code during cellular reproduction. This can be beneficial or harmful.

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A mechanism of evolution in which allele frequencies of a population change over generations due to chance.

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Differences in molecular similarities (usually proteins) can be used to determine degrees of relationship between different species.

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Organisms during embryological development go through evolutionary stages.

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Structures in  some organisms that seem to have no use in one species but are useful in others.

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Parts that are similar in structure but have different uses in  different species.

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Variation = Mutation

Inheritance = DNA and Sexual Selection

Selection = Selection and Genetic Drift

Time = Migration/Gene Flow

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Any movement of individuals and/or the genetic material they carry from one population to another.