| Pronunciation: | | `speeshee'eyshun
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 WordNet Dictionary |
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| | Definition: | | [n] the evolution of a biological species |
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| | See Also: | | evolution, phylogenesis, phylogeny |
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| Biology Dictionary |
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| | Definition: | | The formation of two or more new species from a single old species. |
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| Glossary |
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| | Definition: | | the evolutionary process that is said to occur when two previous subspecies (of the same species) are no longer capable of successful interbreeding; they are then two different species. |
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