synapomorphy


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Related to synapomorphy: Symplesiomorphy

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 ?
This feature was considered a synapomorphy of Jobaria + Neosauropoda by Wilson (2002) and Mamenchisaurus + Neosauropoda (Carballido et al.
One possible synapomorphy for the tribe is an absence of obvious leaf surface striations, since across this tribe striations have only been observed in some species of Stenocarpus (Carpenter, 1994).
The presence of anterior ventral glands (character 10, state 1) may represent a non-ambiguous synapomorphy for all salamanders to the exclusion of the Sirenidae, while the presence of posterior ventral glands (character 11, state 1) was recovered as the ancestral state for the Salamandroidea with a subsequent loss (character 11, state 0) on the branch leading to the Amphiumidae.
Therefore, the assessment of whether the low chromosome number is a synapomorphy of the clade or an autapomorphy of the specimens determined by Maury as B.
Hence, they have dimorphic anthers that are a diagnostic synapomorphy for a complex composed entirely of American species.
Hypermineralized tooth plates are one of the most important synapomorphies of Holocephali, and the presence of one pair of tooth plates in the lower jaw and two pairs in the upper jaw is a synapomorphy of Chimaeriformes (Didier, 1995).
hair is a synapomorphy of mammals; Loss of the hind limb is a synapomorphy of snakes) systematics--the branch of biology concerned with using evolutionary and phylogenetic principles to organize classification systems and to understand the origin and maintenance of biological diversity taxon--a formally-named group of organisms taxonomy--the scientific discipline concerned with discovering, naming, and classifying taxa
a shared SINE integration represents a synapomorphy (derived state that is identical by descent) in contrast to a nucleotide sequence which may be identical simply by state (e.
Yoshizawa and Saigusa (2001) proposed another potential synapomorphy, the fork of the anterior axillary fold-line of the forewing, a character that is independent from that one of the mouthparts, which reinforces the monophyly of Hemiptera.
We propose this morphological condition as another synapomorphy for this widely recognized group.
Thus, we suggest that this feature is a synapomorphy for the E.