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biogenesis
Biogenesis is the production of new living organisms or organelles. The law of biogenesis, attributed to Louis Pasteur, is the observation that living things come only from other living things, by reproduction (e.g. a spider lays eggs, which develop into spiders). That is, life does not arise from non-living material, which was the position held by spontaneous generation.〔(Pasteur's Papers on the Germ Theory )〕〔Louis Pasteur: External links〕 This is summarized in the phrase ''Omne vivum ex vivo'', Latin for ''"all life () from life."'' A related statement is ''Omnis cellula e cellula'', "all cells () from cells;" this observation is one of the central statements of cell theory.
== ''Biogenesis'' and ''abiogenesis'' ==
The term biogenesis was coined by Henry Charlton Bastian to mean the generation of a life form from nonliving materials, however, Thomas Henry Huxley chose the term abiogenesis and redefined biogenesis for life arising from preexisting life. The generation of life from non-living material is called abiogenesis, and is theorized to have occurred at least once in the history of the Earth,〔 〕 or in the history of the Universe (see panspermia), when life first arose.
The term ''biogenesis'' may also refer to biochemical processes of production in living organisms (see biosynthesis).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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