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No references found			While punctuated equilibrium (PE) reflected in the fossil record is a strong negative evidence to the underlying principle of phyletic gradualism (PG) enshrined in the evolutionary theory, the phenomenon of cell-directed mutagenesis challenges another tenet of the theory, namely, the requirement of stochastic mutations produced by extra-cellular agents to create heritable changes in the organism. Origin of genetic information and evolution of biological species by Wahid, Pallacken Abdul / Islam & Science Gould, paleontologists, published "Punctuated Equilibria: an Alternative to Phyletic Gradualism. The apotheosis of Stephen Jay Gould. (Notebook) by Gross, Paul R. / New Criterion Punctuated equilibria: An alternative to phyletic gradualism. Selectionist thought and methodological orthodoxy in psychological ... by Morgan, David L. / The Psychological Record			PHY Phycitinae Phycobilin phycobiliprotein phycobilisome phycobiliviolin phycobiont Phycocyanin phycocyanobilin Phycoerythrin phycoerythrobilin phycology Phycomycetes Phycomycosis Phycosecidae phycourobilin Phyfe Phyfe, Duncan Phygellus phylacteries phylactery Phylactolaemata Phyle Phylembryogeny Phyletic Evolution phyletic gradualism phyllary Phyllirea Phyllite Phyllobothrioidea phyllobranchiate gill Phylloclade Phyllode Phyllodocidae phyllofacies Phyllogoniaceae Phylloid Phyllolepida Phyllome Phyllomedusa phyllomorphic stage phyllonite Phyllophora Phyllophoridae Phyllopoda Phylloquinone Phylloscopus phyllosilicate phyllosoma phyllospondylous Phyllostictales			phylacteries phylacteries phylacteries phylactery phylactery phylactery phylactic Phylactocarp Phylactolaema Phylactolaemata Phylactolaematous Phylactolema Phylactory Phylactory Phylactory phylae phylae Phylanstery Phylarch Phylarchy Phylate Phylate Phylates Phylates phylaxis phyle phyle Phylembryogeny phyletic phyletic evolution phyletic gradualism Phyletic Life Span Processes phyletically phylic phylic PHYLIP Phylis Wheatley phyll- phyll- Phyllamphora Phyllamphora Phyllanthus Phyllanthus Phyllanthus abnormis Phyllanthus amarus Phyllanthus emblica Phyllanthus gasstroemii Phyllanthus lacunarius Phyllanthus mairei Phyllanthus niruri Phyllarthus Phyllarthus Phyllarthus Phyllary Phyllary Phyllaurea phyllid Phyllidae phylliform Phylliidae Phylliidae

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