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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 ...
Unlike his many popular books of essays, it was a technical book, and over the following decades it was influential in stimulating research into heterochrony (changes in the timing of embryonic development), which had been neglected since Ernst Haeckel's theory that ontogeny recapitulates phylogeny [a] had been largely
Ernst Haeckel – Evolution's controversial artist. A slide-show essay; Kunstformen der Natur (from biolib.de) Kunstformen der Natur (Digitization from Phaidra) PNG alpha-transparencies of Haeckel's "Kustformen der natur" Proteus – Animated documentary film on Haeckel's life and work; Ernst Haeckel Haus and Museum in Jena; Schmidt, H. (1934).
For example, the philosopher and historian Hannah Arendt analysed the historical development via social Darwinist ethics to racist ideology. [50] Another example is recent scholarship that portrays Ernst Haeckel's Monist League as a mystical progenitor of the Völkisch movement and, ultimately, of the Nazi Party of Adolf Hitler.
Haeckel divided human beings into ten races, of which the Caucasian was the highest and the primitives were doomed to extinction. [80] Haeckel was also an advocate of the out of Asia theory by writing that the origin of humanity was to be found in Asia; he believed that Hindustan (South Asia) was the actual location where the first humans had ...
Perrault's French fairy tales, for example, were collected more than a century before the Grimms' and provide a more complex view of womanhood. But as the most popular, and the most riffed-on, the Grimms' are worth analyzing, especially because today's women writers are directly confronting the stifling brand of femininity they proliferated.
Daniel E. Gasman (1933 – 19 December 2012) [1] was an American historian at John Jay College and the Graduate Center at City University of New York. [2] He earned his PhD from University of Chicago in modern intellectual history. [2]
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 ...