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3 giu 2024 · Prominent among the defenders of natural selection was the German biologist August Weismann, who in the 1880s published his germ plasm theory. He distinguished two substances that make up an organism: the soma , which comprises most body parts and organs, and the germ plasm, which contains the cells that give rise to the gametes and ...
12 giu 2024 · To account for the halving of the chromosomes in the sex cells, a process known as meiosis, in 1887 the German biologist August Weismann suggested that there must be two different types of cell division, and by 1900 the details of meiosis had been elucidated.
14 giu 2024 · Following Darwin’s death in 1882, biologist and ‘Neo-Darwinist’ August Weismann promulgated the idea of a one-way barrier cordoning off reproductive cells from the rest of the body.
5 giorni fa · August Weismann was one of the most influential biologists of the late nineteenth century. In Essays Upon Heredity he presents a series of essays giving his thoughts on the mechanisms of heredity. Two of the essays offer specific refutation of the idea that acquired characters can be inherited.
5 giorni fa · 1892: Weismann barrier and germ plasm by August Weismann; 1908: Hardy–Weinberg principle by Wilhelm Weinberg; 1928: First reliable pregnancy test by Selmar Aschheim and Bernhard Zondek; 1928: Artificial cloning of organisms by Hans Spemann and Hilde Mangold; 1932: Urea cycle by Kurt Henseleit and Hans Adolf Krebs
1 giorno fa · Friedrich August von Hayek CH FBA (/ ˈ h aɪ ə k / HY-ək, German: [ˈfʁiːdʁɪç ˈʔaʊɡʊst fɔn ˈhaɪɛk] ⓘ; 8 May 1899 – 23 March 1992), often referred to by his initials F. A. Hayek, was an Austrian-British academic, who contributed to economics, political philosophy, psychology, and intellectual history.
31 mag 2024 · Come dire august weismann Inglese? Pronuncia august weismann con 2 pronunce audio, 1 significato, e altro ancora per august weismann.
