News tagged with phylogeny
Phylogenetics
In biology, phylogenetics (pronounced /faɪlɵdʒɪˈnɛtɪks/) is the study of evolutionary relatedness among groups of organisms (e.g. species, populations), which is discovered through molecular sequencing data and morphological data matrices. The term phylogenetics derives from the Greek terms phyle (φυλή) and phylon (φῦλον), denoting “tribe” and “race”; and the term genetikos (γενετικός), denoting “relative to birth”, from genesis (γένεσις) “birth”.
Taxonomy, the classification, identification, and naming of organisms, is richly informed by phylogenetics, but remains methodologically and logically distinct. The fields of phylogenetics and taxonomy overlap in the science of phylogenetic systematics — one methodology, cladism (also cladistics) shared derived characters (synapomorphies) used to create ancestor-descendant trees (cladograms) and delimit taxa (clades). In biological systematics as a whole, phylogenetic analyses have become essential in researching the evolutionary tree of life.
For more information about Phylogenetics, read the full article at
Wikipedia.
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Diversification of land plants
Researchers have reconstructed phylogenetic relationships among all 706 families of land plants.
Apr 05, 2012 |
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Research into molluscan phylogeny reveals deep animal relationship of snails and mussels
Snails, mussels, squids as different as they may look, they do have something in common: they all belong to the phylum Mollusca, also called molluscs. An international team of researchers headed by Kev ...
Sep 21, 2011 |
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New technique fills gaps in fossil record
University of Pennsylvania evolutionary biologists have resolved a long-standing paleontological problem by reconciling the fossil record of species diversity with modern DNA samples.
Sep 19, 2011 |
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Orchids and fungi: An unexpected case of symbiosis
The majority of orchids are found in habitats where light may be a limiting factor. In such habitats it is not surprising that many achlorophyllous (lacking chlorophyll), as well as green, orchids depend on ...
Jul 12, 2011 |
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When plants spin off new species
(PhysOrg.com) -- Contrary to what most people may think, the speciation rates of plants are not linked to the first development of a novel physical trait or mechanism. New international research shows that ...
May 13, 2011 |
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The eyes have it: Dinosaurs hunted by night
The movie Jurassic Park got one thing right: Those velociraptors hunted by night while the big plant-eaters browsed around the clock, according to a new study of the eyes of fossil animals. The study will ...
Other Sciences / Archaeology & Fossils
Apr 14, 2011 |
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Like products, plants wait for optimal configuration before market success
Just as a company creates new, better versions of a product to increase market share and pad its bottom line, an international team of researchers led by Brown University has found that plants tinker with ...
Mar 29, 2011 |
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Playing Favorites: Bacteria Share Genes, But Mostly with Family
(PhysOrg.com) -- UConn researchers have shown that genetic similarity may come from preferential gene sharing rather than shared ancestry.
May 18, 2010 |
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