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  2. Apr 15, 2024 · August Weismann was a German biologist and one of the founders of the science of genetics. He is best known for his opposition to the doctrine of the inheritance of acquired traits and for his “germ plasm” theory, the forerunner of DNA theory.

  3. Jan 26, 2015 · Weismann defines the process of amphimixis as the fusion of the germ-plasms from two parents. Weismann claims that each sex cell only carries half of the idants of a parent, and due to the fusion of idants during amphimixis, the idants of germ-plasm in the zygote doubles.

  4. August Friedrich Leopold Weismann FRS (For), HonFRSE, LLD (17 January 1834 – 5 November 1914) was a German evolutionary biologist. Fellow German Ernst Mayr ranked him as the second most notable evolutionary theorist of the 19th century, after Charles Darwin.

  5. The idea of the Weismann barrier is central to the modern evolutionary synthesis, though it is not expressed today in the same terms. In Weismann's opinion the random process of mutation in the gametes (or stem cells which make them) is the only source of change for natural selection to work on.

  6. May 23, 2014 · English. August Friedrich Leopold Weismann studied how the traits of organisms developed and evolved in a variety of organisms, mostly insects and aquatic animals, in Germany in the late nineteenth and early twentieth centuries. Weismann proposed the theory of the continuity of germ-plasm, a theory of heredity.

  7. Evolution Studies. From the first Weismann was a strong supporter of the theory of evolution by natural selection, as put forward by Charles Darwin and Alfred Wallace. In his book The Evolution Theory (2 vols., 1904) Weismann stated that Darwin's Origin of Species, when it was published in German in 1859, fell "like a bolt from the blue."

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