Phyletic Gradualism
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Phyletic gradualism is a model of evolution which theorizes that most speciation is slow, uniform and gradual. When evolution occurs in this mode, it...- democratics, the socialist society is achieved through gradualism. In the natural sciences, gradualism is the theory which holds that profound change is the...
rather than one species gradually transforming into another. Punctuated equilibrium is commonly contrasted with phyletic gradualism, the idea that evolution...- to be a variation of these models, lying somewhere in between the phyletic gradualism model and the punctuated equilibrium model. It states that speciation...
is inferred to oftentimes lead to sympatric speciation through a phyletic gradualism mode of evolution. Disruptive selection can be caused or influenced...
periods of branching speciation. The theory was contrasted against phyletic gradualism, the popular idea that evolutionary change is marked by a pattern...
of the specimens. The concept of chronospecies is related to the phyletic gradualism model of evolution, and it also relies on an extensive fossil record...- speciation events have remained relatively constant and gradual over time (known as "Phyletic gradualism" – see diagram), some palaeontologists such as Niles...
- between the two. phyletic gradualism A model of evolution which theorizes that most speciation occurs slowly, uniformly, and gradually, and that there...
- explained within the Darwinian evolutionary synthesis. Catastrophism Phyletic gradualism Rapid modes of evolution Leo S. Berg History of evolutionary thought...
- frequently under the assumption of a Phyletic gradualism model of evolution, under which speciation is slow, uniform and gradual. The majority of speciation would...
- Anagenesis (redirect from Phyletic evolution)Anagenesis is the gradual evolution of a species that continues to exist as an interbreeding population. This contrasts with cladogenesis, which occurs...
- Phylogenetic divergence (Phyletic gradualism) (above) shows relatively slow changes during geologic epoch: the broken balance (below) illustrates morphological...
- Phenylketonuria Pheromone Phosphodiester bond Photoreactivation Phyletic evolution Phyletic gradualism Phylogenetic tree Phylogenetics Physical map Piebald Pilus...
- phrase. In biology Anagenesis Cladogenesis Phyletic gradualism Punctuated equilibrium Punctuated gradualism Quantum evolution Saltation (biology) Stephen...
Gould, Stephen Jay (1972). "Punctuated equilibria: an alternative to phyletic gradualism". In Schopf, Thomas J.M. (ed.). Models in Paleobiology. San Francisco...
Gould, Stephen Jay (1972), "Punctuated equilibria: an alternative to phyletic gradualism", in Schopf, Thomas J. M. (ed.), Models in Paleobiology, San Francisco...- Niles; Gould, S. J. (1972). "Punctuated equilibria: an alternative to phyletic gradualism". In Schopf, T. J. M. (ed.). Models in Paleobiology. San Francisco:...
J. (1989). "APPENDIX: Punctuated Equilibria: An Alternative to Phyletic Gradualism". Time Frames: The Evolution of Punctuated Equilibria. By Eldredge...- with modern humans Human evolution Human origins Mitochondrial Eve Phyletic gradualism Recent African origin of modern humans Y-chromosomal Adam Wolpoff...
- English Wikipedia has an article on: phyletic gradualism Wikipedia phyletic gradualism (uncountable) A model of evolution which theorizes that most speciation
- on species, as he did, without theorising on their phyletic relations, than to promulgate phyletic theories without a sufficient specific knowledge of
- Eldredge & Stephen Jay Gould, "Punctuated Equilibria: An Alternative to Phyletic Gradualism," in Models in Paleobiology (1972) When we read in Genesis the account
- may occur in a particular organism. Gradualism is the theory that selection and variation happens in a more gradual state. In other words, over a short