de Vriesianism

de Vriesianism

the hypothesis that evolution has taken place as a result of drastic mutations, particularly at the species level. The hypothesis was suggested c .1900 by the Dutch botanist, H. de Vries (1848–1935), who was also responsible for the rediscovery of MENDELIAN GENETICS.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005