Term
| Morphological species concept (MSC) |
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Definition
| Defines species on the basis of morphological similarity. Problems: cryptic species |
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Term
| Biological Species Concept (BSC) |
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Definition
| A group of naturally or potentially interbreeding populations which are reproductively isolated from other such groups. Problems are potential interbreeding (how do we tell?), asexual organisms, hybrids, and ring species. |
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Term
| Phylogenetic Species Concept |
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Definition
| The smallest aggregation of populations or lineages that are recognizable b a unique combination of character states, and within which, there is a pattern of descent. |
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Term
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Definition
| Reduction or prevention of gene flow due to intrinsic isolating mechanisms |
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Term
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Definition
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