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Cladistics in Biological News

Queen's University Belfast researchers trace octopuses' family tree

...from." This revelation into the global distribution and diversity of deep-sea fauna, to be reported this week in the respected scientific journal cladistics , was made possible by intensive sampling during International Polar Year expeditions. The findings form part of the first Census of Marine Life (C...
Cladistics in Biological Definition

Cladistics

This cladogram shows the relationship among various insect groups. In some cladograms, the length of the horizontal lines indicates time elapsed since the last common ancestor. Cladistics ( Greek : clados = branch) or phylogenetic systematics ( Greek : phylon = race and genetic ...

Biology

...ms in paleontology . Biologists organize and analyze evolutionary relationships through various methods, including phylogenetics , phenetics , and cladistics . Major events in the evolution of life, as biologists currently understand them, are summarized on this evolutionary timeline . Diversity: the...

Evolutionary tree

...utionary tree of living things is currently supposed to run something along the lines of that listed below. Most of the tree was based on ideas from cladistics ; where more than two groups are shown in a single branch, there is disagreement about how they diverged. Hypothetically taxonomy would follow the ...

Monophyletic

...or the sort of groups discussed here, whereby monophyly includes both holophyly and paraphyly. See also taxonomy Linnaean taxonomy cladistics evolutionary taxonomy ...

Paleontology

...singly sets these species in a genealogical framework, showing their degrees of interrelatedness using the still somewhat controversial technique of " cladistics ". The primary economic importance of paleontology lies in the use of fossils to determine the age and nature of the rocks that contain them or the ...

Paraphyletic

...yletic groups are often erected on the basis of plesiomorphies (ancestral similarities) instead of upon apomorphies (derived similarities). In most cladistics -based schools of taxonomy, the existence of paraphyletic groups in a classification are regarded as errors. Some groups in currently accepted taxono...

Phylogeny

...etermine the ancestral relationships among known species (both living and extinct ), and the most commonly used methods to infer phylogenies include cladistics , phenetics , maximum likelihood, and Bayesian. During the late 19th century , the theory of recapitulation, or Haeckel 's biogenetic law, was wi...

Taxonomy

...ploys the method of gene sequencing to construct phylogenetic trees . See also systematics scientific classification ontology cladistics Integrated Taxonomic Information System Important publications in taxonomy Folksonomy Fishes Taxonomy (Sharks) External links ...

Zoology

...nd plants is considered in the articles on evolution , population genetics , heredity , variation , Mendelism , reproduction . Systematics , cladistics , phylogenetics , phylogeography , biogeography and taxonomy classify and group species via common descent and regional associations. In add...
Cladistics in Biological Dictionary

Cladistics

Cladistics is a form of biological systematics which classifies living organisms on the basis of shared ancestry. It can be distinguished from other taxonomic systems, such as phenetics, by its focus on evolutionary... Cladistics , from the ancient Greek κλάδος, klados, "branch", is...

Heterosporous

...porous (or isosporous) or heterosporous . ... Also, most heterosporous plants produce their two kinds of sporangia in ... in reconstructing the cladistics of heterosporous ferns" ... Add the "Quote of the Day" to Your Site or Blog Now! ... Definition of Heterosporous . Heterosporous . Producing t...

Evolutionary biology

...onary ... The Evolutionary Biology Portal ... Evolutionary biology ... Show new selections ... Evolutionary biology fields— cladistics • Ecological genetics • Evolutionary ... The Department of Ecology and Evolutionary Biology is within the Division of ... associate profe...

Clade

...of organisms, such as a species, whose members share homologous features derived ... A clade (from ancient Greek κλάδος, klados, "branch") is ... cladistics n. (used with a sing. verb) A system of classification based on ... The word ' clade ' was coined by Julian Huxley in 1957 to refer to characteristics...

Arachnida

... Arachnida . P42-P162 in Moore, R.C. (ed.) Treatise on Invertebrate Paleontology. ... Evolutionary morphology and phylogeny of the Arachnida . cladistics 6: 1-38. ... Lamarck included the Thysanura and the Myriapoda in his class Arachnida . ... The position of the Arachnida in the great sub-phyl...
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