phyletic evolution

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• phyletic evolution — Genetic changes that occur within an evolutionary line …   Dictionary of invertebrate zoology

• evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …   Universalium

• Phyletic gradualism — is a macroevolutionary hypothesis rooted in uniformitarianism. The hypothesis states that species continue to adapt to new challenges over the course of their history, gradually becoming new species. Gradualism holds that every individual is the… …   Wikipedia

• Evolution — This article is about evolution in biology. For other uses, see Evolution (disambiguation). For a generally accessible and less technical introduction to the topic, see Introduction to evolution. Part of a series on …   Wikipedia

• phyletic gradualism —   Model of evolution in which species change gradually through time, by slow directional transformation within a lineage, producing a long and graded series of differing forms.   Cf. punctuated evolution …   Expanded glossary of Cycad terms

• phyletic — Denoting the evolution of sequential changes in a line of descent by which one species is transformed into a new species. [G. phyletikos, tribal, fr. phyle, a tribe] * * * phy·let·ic fī let ik adj of or relating to the course of evolutionary or… …   Medical dictionary

• Rapid modes of evolution — have been proposed by several notable biologists ever since Charles Darwin proposed his theory of evolutionary descent by natural selection. In his classic volume On the Origin of Species (1859), Darwin famously and eloquently stressed the… …   Wikipedia

• Objections to evolution — Part of a series on Evolutionary Biology …   Wikipedia

• Tempo and Mode in Evolution — (1944) was George Gaylord Simpson s seminal contribution to the evolutionary synthesis, which integrated the facts of paleontology with those of genetics and natural selection.Simpson argued that the microevolution of population genetics was… …   Wikipedia

• punctuated evolution —   Model of evolution in which species are relatively stable and long lived, and in which new species appear during concentrated outbursts of rapid speciation followed by differential success of some of those species.   Cf. phyletic gradualism …   Expanded glossary of Cycad terms

• List of genetics-related topics — This is a list of terms related to genetics. NOTOC # * 3 end * 5 end A * Acentric chromosome * Achondroplasia * Active site * Adam s Curse * Adaptation * Adenine * Adenosine * Adenovirus * Adenosine diphosphate (ADP) * Ala * Alagille syndrome *… …   Wikipedia