apomorphy


apomorphy
n. [Gr. apo, away; morphe, form]
A term pertaining to derived characters, normally used in cladistic taxonomy.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • apomorphy — a state derived by evolution from a primitive state (plesiomorphy); applied to a character, not a taxon. It relates to the compared character state and the hierarchical level considered, i.e. the character is apomorphic in relation to one state… …   Dictionary of ichthyology

  • apomorphy — noun A derived characteristic of a clade. Any feature novel to a species and its descendants. Ant: plesiomorphy …   Wiktionary

  • apomorphy —   Derived character or character state.   See also autoapomorphy, homology, plesiomorphy, symplesiomorphy, synapomorphy …   Expanded glossary of Cycad terms

  • apomorphy — …   Useful english dictionary

  • Cladistics — For the scientific journal, see Cladistics (journal). Part of a series on Evolutionary Biology …   Wikipedia

  • Clade — For other uses, see Clade (disambiguation). Cladogram (family tree) of a biological group. The red and blue boxes represent clades (i.e., complete branches). The green box is not a clade, but rather represents an evolutionary grade, an incomplete …   Wikipedia

  • Synapomorphy — In evolutionary biology, a synapomorphy is a derived character state shared by two or more terminal groups (taxa included in a cladistic analysis as further indivisible units) and inherited from their most recent common ancestor. Derived in this… …   Wikipedia

  • Paraphyly — A cladogram showing a hypothetical descent from an ancestor species of the clade vertebrata.[1] Note that cladograms do not necessarily correspond to taxonomic classifications. In this one, Sauropsida are a paraphyletic group. It can be made… …   Wikipedia

  • PhyloCode — The International Code of Phylogenetic Nomenclature , known for short as the PhyloCode , is a developing draft for a formal set of rules governing phylogenetic nomenclature. Its current version is specifically designed to regulate the naming of… …   Wikipedia

  • Ornithurae — Ornithurans Temporal range: Early Cretaceous–Recent, 136–0 Ma …   Wikipedia


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