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The essay describes the development of Hugo de Vries's thinking on heredity from the publication of his Intracellulare Pangenesis in 1889 to the publication of Die Mutations-theorie, Volume 2, in 1903. De Vries's work in the 1890s can be characterized as an attempt to defend his theory of pangenes, …
During the 1880s, de Vries became interested in heredity. In 1889 he published Intracellular Pangenesis, in which he critically reviewed previous research on inheritance and advanced the theory that elements in the nucleus, ‘pangenes’, determine hereditary traits. To investigate his theories, he began breeding plants in 1892 and by 1896 had ...
Hugo de Vries. Hugo Marie de Vries, (16 de febrero de 1848 - 21 de mayo de 1935). Botánico holandés, nacido en Haarlem y fallecido en Lunteren, es unos de los tres biólogos, junto a Carl Correns y Erich von Tschermak que en 1900 redescubrieron las leyes fundamentales de la genética publicadas primero por Gregor Mendel en 1865.
Hugo de Vries had sinds 1889 geëxperimenteerd met het kweken en kruisen van planten, zoals aster, chrysanten en viooltjes. Op grond van deze experimenten concludeerde hij dat het karakter van een plant, het erfelijk materiaal, was opgebouwd uit bepaalde eenheden.
mutation theory, idea that new species are formed from the sudden and unexpected emergence of alterations in their defining traits. Advanced at the beginning of the 20th century by Dutch botanist and geneticist Hugo de Vries in his Die Mutationstheorie (1901–03; The Mutation Theory), mutation theory joined two seemingly opposed traditions of evolutionary thought.
Hugo de Vries Hugo Marie de Vries Botánico holandés Hugo de Vries nació el 16 de febrero de 1848 en Haarlem. Doctorado por la Universidad de Leiden en 1870, posteriormente trabajó en la de Heidelberg con el fisiólogo alemán Julius von Sachs. En 1877 fue catedrático de botánica de la Universidad de Amsterdam.
22 de abr. de 2013 · When they reviewed the literature before publishing their own results, they were startled to find Mendel's old papers spelling out those laws in detail. Each man announced Mendel's discoveries and his own work as confirmation of them. By 1900, cells and chromosomes were sufficiently understood to give Mendel's abstract ideas a physical context.
