apomorphy


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Related to apomorphy: Autapomorphy

apomorphy

(ăp′ə-môr′fē)
n. pl. apomor·phies
An evolved character or trait unique to a particular phylogenetic group of organisms. The vertebral column is an apomorphy of vertebrates.

ap′o·mor′phic adj.
References in periodicals archive ?
I consider its loss in some Chyromyidae an apomorphy.
I consider it an apomorphy in the Chyromyidae, it being even more unusual in the other acalyptrates.
I consider it an apomorphy within the Chyromyidae as it appears in only one species group.
I therefore consider this absence of setae within the Chyromyidae an apomorphy.
A tendency to form a shallow carina is common within the Chyromyidae, but its marked development in some cases suggests this is an apomorphy.
The assumption, therefore, of invariant selective environments is not clearly superior to one that admits that selective environments may have changed since the apomorphy arose.
In the Cyperaceae example, the intensional connotations could be preserved by simply using an apomorphy definition citing the apomorphic characters that are commonly associated with the name.
Accordingly, definitions might be of three types: node based, stem based, or apomorphy based.
These definitions (node based, stem based and apomorphy based) are based solely on common descent, the idea being to "point at" a common ancestor and all of its descendants.
13) may be an additional apomorphy of Cassiope, but such leaves commonly occur within Clade 1 (Fig.
It is significantly different from the plasmodial type as found in Haemodoraceae and Commelinaceae, and may be an apomorphy for some Zingiberales.
The tenuinucellate condition is an apomorphy for the remaining genera of Alliaceae, although Ashurmetov and Yengalycheva (in press) reported a "mediocrinucellate" type for Allium, somehow intermediate between the crassinucellate and tenuinucellate types.