cladistics

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cladistics

(klə-dĭs′tĭks)
n. (used with a sing. verb)
A system of classification based on the presumed phylogenetic relationships and evolutionary history of groups of organisms.

cla·dis′tic, cla·dis′ti·cal adj.
cla·dis′ti·cal·ly adv.

cladistics

an approach to CLASSIFICATION by which organisms are ordered and ranked entirely on a basis which reflects recent origin from a common ancestor, i.e. like a family tree. The system is concerned simply with the branching of the tree and not with the degree of difference. The latter is the concern of evolutionary taxonomists who oppose the cladistic approach.
References in periodicals archive ?
A cladistic view of subspecies would require constructing a phylogenetic tree out of the breeding populations in a single species.
In addition to the 111 morphological characters found, four biological characters drawn from Pasteels (1977) or originating from personal observations were also employed resulting in a total of 115 characters that went into the cladistic analysis (see Appendices 1 and 2).
nassa, although the results of the cladistic analysis of Kozlowska et al.
In the cladistic biogeographical analysis, we used the classification scheme proposed by Morrone (2002), wherein the New World is divided into 3 regions: Nearctic, Neotropical and Andean, and Morrone (2001, 2004), and in which the Neotropical region is divided into 4 subregions (caribbean, Amazon, Chacoan and Parana) and then into provinces.
Data matrix employed in the cladistic analysis of the LD P unistrigatus species group.
Cladistic relationships among higher groups of Heteroptera: congruence between morphological and molecular data sets.
simple vs dissected) as a character from their cladistic analysis of Lomatia because of doubt concerning homologies.
Lastly, these problems indicate that the position of Tapera and Dromococcyx within Cuculidae was problematic in our study (Posso & Donatelli 2006) and justify further cladistic analysis.
Next, they will work together to classify their own organisms according to the cladistic methods they just learned.
Cladistic analysis of Neuroptera and their systematic position within Neuropterida (Insecta: Holometabola: Neuropteridae: Neuroptera).
Although there is only a single unambiguous synapomorphy uniting [dagger] Chanoides macropoma and [dagger] Lusitanichthys characiformis (centrum of third free vertebra markedly shorter than other surrounding centra), it is interesting to notice that this feature is homoplasy free within the numerous fishes included in the cladistic analysis of the present work, and also that this clade C41 is supported by a bootstrap value of 62%.
Diogo (anthropology, George Washington University) presents a cladistic analysis of osteichthyan higher-level interrelationships based on a phylogenetic comparison of 356 characters in 80 extent and fossil terminal taxa representing all major groups of Osteichthyes.