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View synonyms for
evolution
[ ev-uh-loo-shuhnor, especially British, ee-vuh- ]
noun
- any process of formation or growth; development:
the evolution of a language; the evolution of the airplane.
Synonyms: , ,
Antonyms: , ,
- a product of such development; something evolved:
The exploration of space is the evolution of decades of research.
- Biology. change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift.
- a process of gradual, peaceful, progressive change or development, as in social or economic structure or institutions.
- a motion incomplete in itself, but combining with coordinated motions to produce a single action, as in a machine.
- a pattern formed by or as if by a series of movements:
the evolutions of a figure skater.
- an evolving or giving off of gas, heat, etc.
- Mathematics. the extraction of a root from a quantity. Compare involution ( def 4 ).
- a movement or one of a series of movements of troops, ships, etc., as for disposition in order of battle or in line on parade.
- any similar movement, especially in close order drill.
evolution
/ 藢颈藧惫蓹藞濒耻藧蕛蓹苍 /
noun
- biology a gradual change in the characteristics of a population of animals or plants over successive generations: accounts for the origin of existing species from ancestors unlike them See also natural selection
- a gradual development, esp to a more complex form
the evolution of modern art
- the act of throwing off, as heat, gas, vapour, etc
- a pattern formed by a series of movements or something similar
- an algebraic operation in which the root of a number, expression, etc, is extracted Compare involution
- military an exercise carried out in accordance with a set procedure or plan
evolution
- The process by which species of organisms arise from earlier life forms and undergo change over time through natural selection . The modern understanding of the origins of species is based on the theories of Charles Darwin combined with a modern knowledge of genetics based on the work of Gregor Mendel. Darwin observed there is a certain amount of variation of traits or characteristics among the different individuals belonging to a population. Some of these traits confer fitness鈥攖hey allow the individual organism that possesses them to survive in their environment better than other individuals who do not possess them and to leave more offspring. The offspring then inherit the beneficial traits, and over time the adaptive trait spreads through the population. In twentieth century, the development of the the science of genetics helped explain the origin of the variation of the traits between individual organisms and the way in which they are passed from generation to generation. This basic model of evolution has since been further refined, and the role of genetic drift and sexual selection in the evolution of populations has been recognized.
- See also natural selectionSee Notes at adaptation
- A process of development and change from one state to another, as of the universe in its development through time.
evolution
- A theory first proposed in the nineteenth century by Charles Darwin , according to which the Earth 's species have changed and diversified through time under the influence of natural selection . Life on Earth is thought to have evolved in three stages. First came chemical evolution , in which organic molecules (see also organic molecule ) were formed. This was followed by the development of single cells capable of reproducing themselves. This stage led to the development of complex organisms capable of sexual reproduction . Evolution is generally accepted as fact by scientists today, although debates continue over the precise mechanisms involved in the process. ( See mutation , punctuated equilibrium , and creation science .)
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Notes
The first cell is thought to have been formed when the Earth was less than a billion years old.
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Derived Forms
- 藢别惫辞藞濒耻迟颈辞苍补谤测, adjective
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Other 亚洲网紅露点 Forms
- 别惫顎卭路濒耻顎僼颈辞苍路补濒 adjective
- 别惫顎卭路濒耻顎僼颈辞苍路补濒路ly adverb
- 补苍顎卼颈路别惫顎卭路濒耻顎僼颈辞苍 adjective
- an顎卼i路别惫顎卭路濒耻顎僼颈辞苍路补濒 adjective
- an顎卼i路别惫顎卭路濒耻顎僼颈辞苍路补濒路ly adverb
- 诲别顎-别惫路辞路濒耻顎僼颈辞苍 noun
- 苍辞苍顎卐惫路辞路濒耻顎僼颈辞苍路补濒 adjective
- 苍辞苍顎卐惫路辞路濒耻顎僼颈辞苍路补濒路ly adverb
- 辫谤别顎卐惫路辞路濒耻顎僼颈辞苍路补濒 adjective
- 辫谤辞顎卐惫路辞路濒耻顎僼颈辞苍 adjective
- 耻苍顎卐惫路辞路濒耻顎僼颈辞苍路补濒 adjective
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亚洲网紅露点 History and Origins
Origin of evolution1
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亚洲网紅露点 History and Origins
Origin of evolution1
C17: from Latin 脓惫辞濒奴迟颈艒 an unrolling, from 脓惫辞濒惫别谤别 to evolve
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A Closer Look
Darwin's theory of evolution by natural selection assumed that tiny adaptations occur in organisms constantly over millions of years. Gradually, a new species develops that is distinct from its ancestors. In the 1970s, however, biologists Niles Eldredge and Stephen Jay Gould proposed that evolution by natural selection may not have been such a smooth and consistent process. Based on fossils from around the world that showed the abrupt appearance of new species, Eldredge and Gould suggested that evolution is better described through punctuated equilibrium. That is, for long periods of time species remain virtually unchanged, not even gradually adapting. They are in equilibrium, in balance with the environment. But when confronted with environmental challenges鈥攕udden climate change, for example鈥攐rganisms adapt quite quickly, perhaps in only a few thousand years. These active periods are punctuations, after which a new equilibrium exists and species remain stable until the next punctuation.
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Example Sentences
Examples have not been reviewed.
The team said further research of this kind could shed light on the evolution of human social behaviour.
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It is hoped the technique will make surveying butterflies and moths quicker and reveal secrets about their behaviour and evolution.
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Instead, they reveal mammalian brains to be the product of millions of years of evolution and adaptation to environments.
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The company, which was founded in Cologne, Germany, in 1898, has seen several evolutions in its designs, with suitcases made of leather, wood, aluminum and vulcanized fiber.
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鈥淪o it鈥檚 just sort of the evolution of the NHL, the Kings sort of being early adopters of this. We鈥檝e really been at the tip of the spear on a lot of these things.鈥
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