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<p><strong>Ernst Haeckel(1834-1919)</strong></p><p><strong>E.H. 헤켈</strong>은 [[프로티스타계]]를 제창. 1869년에 [[생태학]]이라는 용어를 제안.P<font size="2">hylum, phylogeny등의 용어도 최초로 정의했다. [[다윈]]의 [[종의 기원]]을 읽고 의사직을 버리고 1859년부터 생물학을 하게 된다. </font></p><p><font size="2"><strong></strong></font></p><p><font size="2"><strong>헤켈의 유명한 인용문:</strong></font></p><p>&quot;I established the opposite view, that this history of the embryo ([[ontogeny]]) must be completed by a second, equally valuable, and closely connected branch of thought - the history of race (phylogeny). Both of these branches of evolutionary science, are, in my opinion, in the closest causal connection; this arises from the reciprocal action of the laws of heredity and adaptation... 'ontogenesis is a brief and rapid recapitulation of phylogenesis, determined by the physiological functions of heredity (generation) and adaptation (maintenance).'&quot;Haeckel, E. 1899. <em>Riddle of the Universe at the Close of the Nineteenth Century.</em> </p><p><br /></p>