saltation theory

См. также в других словарях:

• Saltation (biology) — In biology, saltation (from Latin, saltus , leap ) is a sudden change from one generation to the next, that is large, or very large, in comparison with the usual variation of an organism. The term is used for occasionally hypothesized, nongradual …   Wikipedia

• Saltation (geology) — For definition, and other use disambiguation, see Saltation In geology, saltation (from Latin, saltus , leap ) is a specific type of particle transport by fluids such as wind, or the denser fluid water. It occurs when loose material is removed… …   Wikipedia

• mutation theory — A theory of the origin of new characteristics in organisms as a result of changes in the genes; see saltation …   Dictionary of invertebrate zoology

• Climate of Mars — Mosaic image of Mars as seen by Viking 1, 22 February 1980 The climate of Mars has been an issue of scientific curiosity for centuries, not least because Mars is the only terrestrial planet whose surface can be directly observed in detail from… …   Wikipedia

• Modern evolutionary synthesis — Evolutionary theory redirects here. For the sociological theory, see sociobiology. Part of a series on Evolutionary Biology …   Wikipedia

• Julian Huxley — Infobox Scientist name = Julian Huxley box width = 280px image width = 240px caption = Julian Huxley as Fellow of New College, Oxford 1922 birth date = 22 June 1887 birth place = London death date = 14 February 1975 death place = residence =… …   Wikipedia

• Punctuated equilibrium — is a theory of evolutionary biology which states that most sexually reproducing populations experience little change for most of their geological history, and that when phenotypic evolution does occur, it is localized in rare, rapid events of… …   Wikipedia

• Creation Science — Creationism can also refer to creation myths, or to a concept about the origin of the soul. For the movement in Spanish literature, see Creacionismo. Part of a series on Creationism …   Wikipedia

• saltationism — saltationist, n. /sal tay sheuh niz euhm/, n. Biol. any of several theories holding that the evolution of species proceeds in major steps by the abrupt transformation of an ancestral species into a descendant species of a different type, rather… …   Useful english dictionary

• Gradualism — is the belief that changes occur, or ought to occur, slowly in the form of gradual steps (see also incrementalism)Politics and societyIn politics, the concept of gradualism is used to describe the belief that change ought to be modified in small …   Wikipedia

• Hopeful Monster — is the colloquial term used in evolutionary biology to describe an event of instantaneous speciation, saltation, or systemic mutation, which contributes positively to the production of new major evolutionary groups. The memorable phrase was… …   Wikipedia