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Although Haeckel's ideas are important to the history of evolutionary theory, and although he was a competent invertebrate anatomist most famous for his work on radiolaria, many speculative concepts that he championed are now considered incorrect.
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 ...
Music Theory and the White Racial Frame (2020) Race in music, Russian and twentieth century music, as well as rap and hip hop [218] Ellie Hisama: Gendering Musical Modernism: The Music of Ruth Crawford, Marion Bauer, and Miriam Gideon (2007) Gender, race, and sexuality in music theory. Popular music [219] Suzannah Clark: born 1969
Transformational theory is a branch of music theory developed by David Lewin in the 1980s, and formally introduced in his 1987 work, Generalized Musical Intervals and Transformations. The theory, which models musical transformations as elements of a mathematical group , can be used to analyze both tonal and atonal music .
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 discredited.
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.
Proteus is an animated documentary film written and directed by David Lebrun in 2004. [1] It depicts a 19th-century understanding of the sea by interweaving the life and work of German biologist and researcher Ernst Haeckel with excerpts from Samuel Taylor Coleridge's epic poem The Rime of the Ancient Mariner, and the story of the oceanographic Challenger expedition of the 1870s.
Ernst Haeckel was a German evolutionist and zoologist known for proposing the gastraea hypothesis. [ 9 ] In 1866, August Leskien , a pioneer of research into sound laws , began studying comparative linguistics as a student of August Schleicher at the University of Jena.