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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.
Again, as in his treatise on creation vs. evolution, he attempts to explain individual examples with either theory. For instance, the existence of non-reproductive castes of ants, such as workers and soldiers, cannot be explained by inheritance of acquired characters.
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May 23, 2014 · Keimplasma. 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.
Jan 26, 2015 · For example, Weismann describes reversion as a phenomenon according to which an offspring's characteristics resemble those of the grandparents, or remote ancestors, but are absent in the parents. Weismann argues that reversion happens because of unequal allocations of hereditary materials across generations.
Germ-plasm theory, concept of the physical basis of heredity expressed by the 19th-century biologist August Weismann (q.v.). According to his theory, germ plasm, which is independent from all other cells of the body (somatoplasm), is the essential element of germ cells (eggs and sperm) and is the
- The Editors of Encyclopaedia Britannica
Jun 11, 2018 · Although he remained one of the foremost defenders of the Darwinian theory of evolution through natural selection, Weismann —a strict selectionist, more so indeed then Darwin—proceeded to construct his own theory of heredity rather than accept Darwin’s hypothesis of panfenesis.
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."
