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evolution    音标拼音: [,ɛvəl'uʃən] [,ivəl'uʃən] [,ɛvol'uʃən] [,ivol'uʃən]
n. U进展,发展;演变,进化

U进展,发展;演变,进化

evolution
进化

evolution
n 1: a process in which something passes by degrees to a
different stage (especially a more advanced or mature
stage); "the development of his ideas took many years";
"the evolution of Greek civilization"; "the slow
development of her skill as a writer" [synonym: {development},
{evolution}] [ant: {degeneration}, {devolution}]
2: (biology) the sequence of events involved in the evolutionary
development of a species or taxonomic group of organisms
[synonym: {evolution}, {organic evolution}, {phylogeny},
{phylogenesis}]

Evolution \Ev`o*lu"tion\ ([e^]v`[-o]*l[=u]"sh[u^]n), n. [L.
evolutio an unrolling: cf. F. ['e]volution evolution. See
{Evolve}.]
1. The act of unfolding or unrolling; hence, any process of
growth or development; as, the evolution of a flower from
a bud, or an animal from the egg.
[1913 Webster]

2. A series of things unrolled or unfolded. "The whole
evolution of ages." --Dr. H. More.
[1913 Webster]

3. (Geom.) The formation of an involute by unwrapping a
thread from a curve as an evolute. --Hutton.
[1913 Webster]

4. (Arith. & Alg.) The extraction of roots; -- the reverse of
involution.
[1913 Webster]

5. (Mil. & Naval) A prescribed movement of a body of troops,
or a vessel or fleet; any movement designed to effect a
new arrangement or disposition; a maneuver.
[1913 Webster]

Those evolutions are best which can be executed with
the greatest celerity, compatible with regularity.
--Campbell.
[1913 Webster]

6. (Biol.) A general name for the history of the steps by
which any living organism has acquired the morphological
and physiological characters which distinguish it; a
gradual unfolding of successive phases of growth or
development.
[1913 Webster]

7. (Biol.) That theory of generation which supposes the germ
to pre["e]xist in the parent, and its parts to be
developed, but not actually formed, by the procreative
act; -- opposed to {epigenesis}.
[1913 Webster]

8. (Metaph.) That series of changes under natural law which
involves continuous progress from the homogeneous to the
heterogeneous in structure, and from the single and simple
to the diverse and manifold in quality or function. The
process is by some limited to organic beings; by others it
is applied to the inorganic and the psychical. It is also
applied to explain the existence and growth of
institutions, manners, language, civilization, and every
product of human activity. The agencies and laws of the
process are variously explained by different philosophrs.
[1913 Webster]

Evolution is to me series with development.
--Gladstone.
[1913 Webster]


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  • Evolution - Wikipedia
    Evolution is the change in the heritable characteristics of biological populations over successive generations [1] [2] It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations [3]
  • Evolution | Definition, History, Types, Examples | Britannica
    Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations
  • Evolution - Natural Selection, Adaptation, Genetics | Britannica
    Biological evolution is the process of change and diversification of living things over time, and it affects all aspects of their lives—morphology (form and structure), physiology, behaviour, and ecology Underlying these changes are changes in the hereditary materials
  • An introduction to evolution - Understanding Evolution
    Evolution 101 An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise
  • Understanding Evolution – Your one-stop source for information on evolution
    Evolution 101 An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise
  • Theory of Evolution - National Geographic Society
    The theory of evolution is a shortened form of the term “theory of evolution by natural selection,” which was proposed by Charles Darwin and Alfred Russel Wallace in the nineteenth century
  • What is evolution? | Biological Principles - gatech. edu
    In more technical terms, biological evolution is defined as change in the gene pool of a population, measurable as changes in allele frequencies in a population over time In the earlier reading, we touched on evolution by natural selection and evolution by mutation
  • Introduction to evolution - Wikipedia
    Evolution is the principal scientific theory that biologists use to understand life and is used in many disciplines, including medicine, psychology, conservation biology, anthropology, forensics, agriculture and other social-cultural applications
  • evolution | Learn Science at Scitable - Nature
    Evolution is a process that results in changes in the genetic material of a population over time Evolution reflects the adaptations of organisms to their changing
  • Evolution | Learn Science at Scitable - Nature
    Evolution is a process that results in changes in the genetic content of a population over time There are two general classes of evolutionary change: microevolution and macroevolution





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