polyphyletic


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pol·y·phy·let·ic

(pol'ē-fī-let'ik),
1. Derived from more than one source, or having several lines of descent, in contrast to monophyletic.
2. In hematology, relating to polyphyletism.

polyphyletic

(pŏl′ē-fī-lĕt′ĭk)
adj.
1. Of or relating to a group of taxa that does not include the common ancestor of all the members.
2. Of or derived from more than one stock or source.

pol′y·phy·let′i·cal·ly adv.
pol′y·phy′ly (pŏl′ē-fī′lē, pə-lĭf′ə-lē) n.

pol·y·phy·let·ic

(pol'ē-fī-let'ik)
1. Derived from more than one source, or having several lines of descent, in contrast to monophyletic.
2. hematology Relating to polyphyletism.

polyphyletic

(of a group of organisms) having been derived from more than one source, that is, not of a single line of evolution.
References in periodicals archive ?
The DNA analyses described here, in particular the co-occurrence of cultivated and wild barleys in each of groups A-D, together with the possibly distinct geographic origins of cultivars in each of these groups, lends support to the growing body of evidence for a polyphyletic origin of domesticated barley (e.
The many para- and polyphyletic groups revealed by the present review may seem to contradict this statement, but most of the families and subfamilies recognized by Andersen have in fact been either confirmed as monophyletic by subsequent studies, or are diagnosed on seemingly convincing synapomorphies, even though they still await to be tested against DNA sequence data.
Section Ophelia is highly polyphyletic, while section Kingdon-Wardia may be derived from within the polyphyletic section Platynema.
Aphylogeny inferred from partial 28S rRNA gene sequences by Cullings (1994) indicated that the myco-heterotropic Monotropoideae are polyphyletic.
The venomous brown tree snake (Boiga irregularis) is a member of the Boiginae sub-family within the polyphyletic taxon Colubridae, and native to tropical Africa, India, and Australia (1).
2, in which he considers the possibility of a polyphyletic view of origins in which common ancestry is far from universal, but rather a scenario in which there are separate origins for each of "the seemingly distinct tribes or families of species.
It is a polyphyletic and artificial genus, after Smith and Down (1979), and Holst (1997); it is endemic to the Neotropics, with about 200 species, of which 19 were reported for the Venezuelan Guayana (Holst, 1997).
The latter group is composed of species that do not fit convincingly into any other genus and is certainly polyphyletic (Huber 2000).
Because the evolution of a prototypic eye is a highly improbable stochastic event that is not driven by selection, the hypothesis of a polyphyletic origin of the eyes, arising 40 to 65 times independently, is extremely unlikely and incompatible with Darwin's ideas" (Gehring 2005, p.
The analysis also indicates that Rhantus is polyphyletic.