synapomorphy

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Related to Synapomorphic: Apomorphy

synapomorphy

(si-nap'ō-mōr-fē),
Species-specific unique embryologic features.
[syn- + apo- + morph- + -y]

synapomorphy

(sĭ-năp′ə-môr′fē)
n. pl. synapomor·phies
An evolved character or trait that is shared by two or more taxonomic groups and is considered to have originated in their common ancestor. Hair is synapomorphic for marsupials, primates, and all other taxa that are grouped together in the class Mammalia.

syn·ap′o·mor′phic adj.

synapomorphy

the sharing of derived characters by different species.
References in periodicals archive ?
Successive levels of nesting in the tree denote smaller and smaller sets of species, each of which shares a given set of synapomorphic features.
4% divergence), and no nucleotide substitutions are synapomorphic for any pair of populations.
The 10 envelope amino acid residues synapomorphic in FeLV-Pco and FeLV-945 included 2 in variable region A and 3 in the proline-rich region (Figures 2, 5).
Haddad and Lyle (2008) consequently rejected the complete absence of leg spines as a synapomorphic characteristic of the subfamily.
In Richards' (1978) key, the punctation on the pronotum, scutum, scutellum, and propodeum are important diagnostic features to recognize Synoeca species, and some of these features are synapomorphic in our cladogram.
Large prosomal exocrine scent glands, also called defensive or repugnatorial glands, are an important synapomorphic character of Opiliones (Martens 1978).
Our aim is to assess whether pollen characters can now be considered synapomorphic and diagnostic, fitting and supporting the current hypotheses of relationship within Arctotideae.
This group of genera can be recognised by several synapomorphic characters that may (once all the genera have been revised) support the monophyly of this group within Corinnidae, be it at tribal or subfamilial level: strongly spined femora I, and strong ventral leg spines on the anterior tibiae and metatarsi; procurved eye rows, posterior row nearly straight; broad male palpal cymbium with dense dorsal setal mat (= cymbial scopula) and modified setae; male palpal tegulum with a short, fine median apophysis; and simple female genitalic structure (see Lessert 1923; Lawrence 1937, 1952; Haddad 2007).
it is probable that most of these features are synapomorphic for this clade.
Even though Armas & Marcano-Fondeur (1992) suggested that reductive neobothriotaxy has occurred independently more than once within Microtityus, Teruel (2000) rejected such an hypothesis arguing that: (i) the loss of trichobothria is an infrequent phenomenon in the family Buthidae and when it occurs in various species of the same genus, it is a synapomorphic condition; (ii) the M.
The Heteromyzidae (= Heleomyzidae and Sphaeroceridae) and the Chyromyidae share synapomorphic characters that justify retaining the latter family in closer phylogenetic proximity to the former rather than to any other acalyptrate family, but there are also characters that the Chyromyidae share with Ephydroidea and Opomyzoidea.
The remaining main characters used by Webster (1993) that were mapped on to the phylogeny are either synapomorphic for only a small group of species, such as stamen number (Fig.