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 ?
In 11 trees Podocarpus branches from a basal polytomy; in 11 other trees it branches from the base of subclade that also bears Dolmitia, Pseudovoltzia, and the group 1 taxa; and in 12 trees Podocarpus is a sister genus with Majonica.
The genus is linked in different ways on a subclade consisting of Pseudovoltzia, Dolmitia, and Araucaria and occurs as a sister genus with Dolmitia in two of these trees.
In 5 of the 10 equally parsimonious trees Aethophyllum branches from an unresolved trichotomy as in the strict consensus; in four trees it is a sister genus with Pseudovoltzia, and in one it is a sister genus with Dolmitia.
In one it is a sister taxon with Dolmitia; in four it shares a node with the latter genus and its sister genus Pseudovoltzia.
Three of the eight equally parsimonious trees show Swedenborgia as a sister genus with Araucaria,' two show it as a sister genus with Dolmitia; and in two trees Swedenborgia branches from an unresolved trichotomy with the two latter genera.
In one of the equally parsimonious trees Voltzia occurs as a sister genus with Majonica.
Twelve trees show Ullmannia as a sister genus with Majonica.
1994) found Sciadopitys to be a sister genus of Podocarpus.