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Ernst Haeckel was born on 16 February 1834, in Potsdam (then part of the Kingdom of Prussia). [11] In 1852 Haeckel completed studies at the Domgymnasium , the cathedral high-school of Merseburg .
The theory of recapitulation, also called the biogenetic law or embryological parallelism—often expressed using Ernst Haeckel's phrase "ontogeny recapitulates phylogeny"—is a historical hypothesis that the development of the embryo of an animal, from fertilization to gestation or hatching (), goes through stages resembling or representing successive adult stages in the evolution of the ...
Ernst Haeckel, a.k.a. Häckel (5 April 1890 in Gemünden am Main – 26 September 1967) was a German general who was awarded the Knights Cross of the Iron Cross. [1]After the end of the war he contributed to military studies of the war for the American military, which are available at NARA:
The altered political situation is also apparent in the work of Ernst Haeckel, who embraced the concept of a scientific worldview from the materialists but gave it a fresh political orientation. Haeckel, who was 17 years younger than Vogt, established himself as a proponent of Darwinism in Germany during the 1860s.
Because it shows relationships (phylogeny) and time (generations), it is a timetree. In contrast, Ernst Haeckel illustrated a phylogenetic tree (branching only) in 1866, not scaled to time, and of real species and higher taxa. In his summary to the section, Darwin put his concept in terms of the metaphor of the tree of life:
Ernst Haeckel wrote about the World Riddle in 1895.. The term "world riddle" or "world-riddle" has been associated, for over 100 years, with Friedrich Nietzsche (who mentioned Welträthsel in several of his writings) and with the biologist-philosopher Ernst Haeckel, who, as a professor of zoology at the University of Jena, wrote the book Die Welträthsel in 1895–1899, in modern spelling Die ...
The center and bottom-center images are Desmonema annasethe; the tentacles reminded Haeckel of his late wife's long flowing hair. [1] Kunstformen der Natur (known in English as Art Forms in Nature) is a book of lithographic and halftone prints by German biologist Ernst Haeckel.
Evolutionary progress as a tree of life. Ernst Haeckel, 1866 Lamarck's two-factor theory involves 1) a complexifying force that drives animal body plans towards higher levels (orthogenesis) creating a ladder of phyla, and 2) an adaptive force that causes animals with a given body plan to adapt to circumstances (use and disuse, inheritance of acquired characteristics), creating a diversity of ...