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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Comparative phylogeography of sympatric sister species, Clevelandia ios and Eucyclogobius newberryi (Teleostei, Gobiidae), across the California Transition Zone.
virginica and the Asian sister species is significantly higher, or about 15.3-16.6%.
biesopoides to be sister species. They were initially thought to be only distinguishable by the number of rows of irregularly shaped nodes that curve posteroventrad from the umbo.
In Africa, the sister species of this scorpion kills more people than all the other scorpions put together.
When the team studied the DNA of these worms, they estimated--based on a molecular clock--that divergence between the human-parasitic sister species T.
There is also the notion that introgression from sister species ruins the "integrity" of the endangered species.
These ants include sister species Azteca ovaticeps Forel and Azteca alfari Emery (subfamily Dolichoderinae, Longino 1991b), as well as Azteca australis Wheeler, Camponotus balzani Emery (Formicinae) and Pachycondyla luteola Roger (Ponerinae).
The initial study will tell us whether the black-spotted stickleback is a raceme emergent, as Bell and Foster believe, or is a sister species to the threespine stickleback complex, as current taxonomy suggests.
baoshanense was obviously separated from its sister species, M.
Some Prasinohaema species look as if they have red-blooded sister species (classified in other genera) that are evolutionarily closer than any other Prasinohaema.