单词	epigenesis
释义	epigenesis /ˌɛpɪˈdʒɛnɪsɪs / noun [mass noun] Biology The theory, now generally held, that an embryo develops progressively from an undifferentiated egg cell. Often contrasted with preformation.In epigenesis, the developing organism begins in an undifferentiated state and gradually changes to a more complex state through multiple interactions.... He did not assume that an inert and common matter was sufficient for a plausible formulation of a theory of mechanical epigenesis. Chapter 5 introduces their role in development, concluding that epigenesis is really, really complicated. Derivatives epigenesist noun & adjective ... While the inability to ‘look inside’ the womb may have led early scientists to favor the epigenesist view that life gradually comes into existence from inanimate matter, we simply know better today. Origin Mid 17th century: from epi- 'in addition' + genesis.
随便看	arid aridification aridisol aridity aridly aridness ariel Aries aright a right one ariki aril arillate arioso Ariosto, Ludovico -arious arise arisings Aristarchus Aristide, Jean-Bertrand Aristides Aristippus aristo aristocracy aristocrat

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