Search results
People also ask
What did Weismann say about evolution?
What was Weismann's theory of germ-plasm?
What is Weismannism based on?
How did Weismann approach his theory?
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.
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.
- University of Göttingen
- 17 January 1834, Frankfurt am Main, Germany
- Darwin–Wallace Medal (Silver, 1908)
- Germ plasm theory
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.
May 23, 2014 · Weismann postulated that germ-plasm was the hereditary material in cells, and parents transmitted to their offspring only the germ-plasm present in germ-cells (sperm and egg cells) rather than somatic or body cells. Weismann also promoted Charles Darwin's 1859 theory of the evolution of species.
The hereditary material, the germ plasm, is transmitted only by the gonads. Somatic cells (of the body) develop afresh in each generation from the germ plasm. August Weismann proposed the germ plasm theory in the 19th century, before the foundation of modern genetics.
Jun 11, 2018 · Thereafter he was a proponent of Darwin’s theory of evolution by means of nwtural selection, and like Fritz Müller and Ernst Haeckel, through his classes and writings, as well as his lectures to his classes, he was able to draw the theory of descent to the attention of the public.
