Construct · 1 fields · 1 citations

synapomorphy: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a single construct in one field Nearest construct by meaning·not indexed
synapomorphy1 CONSTRUCTSynapomorphyHENNIG · 1966

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Cladistics

A shared novelty that reveals common descent

In cladistics, a synapomorphy is a derived character state shared by two or more taxa because they inherited it from their most recent common ancestor, and it is the only kind of similarity that is evidence for a clade. It is contrasted with a shared ancestral state (symplesiomorphy), which groups nothing, and with independently acquired similarity (homoplasy), which misleads. Hennig's Phylogenetic systematics made shared derived characters the sole basis for recognising natural groups. The construct is evidence of common descent: a shared evolutionary innovation that marks a branch of the tree.[1]

Unit
A derived character state shared through inheritance from a common ancestor
Recovery means
Not applicable
Measured by
Recognised by establishing a character state as derived (via outgroup polarity) and shared across candidate clade members

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Nearby constructs

clade1 fields · 1 citationsanchor · a single construct in one fieldbasis3 fields · 5 citationsjingle · one word, three constructs

References

  1. Hennig, W. (1966). Phylogenetic systematics (D. D. Davis & R. Zangerl, Trans.). University of Illinois Press. ISBN 9780252068140

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