Term
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Definition
| Possession by two or more species of a character state derived, with or without modification, from their common ancestor. |
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Term
| Ancestral character state |
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Definition
| The character state originally present in the ancestor of a given lineage. It may be retained or changed in descendants of that ancestor. |
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Term
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Definition
| A derived character that is restricted to a single lineage. |
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Term
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Definition
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Term
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Definition
| One of the variant conditions of a character (e.g., yellow versus brown as state of the character “color of snail shell”). |
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