Oscar Hertwig (21 April 1849 in Friedberg – 25 October 1922 in Berlin) was a German embryologist and zoologist known for his research in developmental...

football player Michael Hertwig (born 1960), German football player and manager Oscar Hertwig (1849–1922), German zoologist Paula Hertwig (1889–1983), German...

during fertilization. Richard Hertwig was the younger brother of Oscar Hertwig, who also analyzed zygote formation. The Hertwig brothers were the most eminent...

was first observed in 1827 by Karl Ernst von Baer. Only in 1876 did Oscar Hertwig prove that fertilization is due to fusion of an egg and sperm cell....

vaguely resemble the features of a bird, while the species name honors Oscar Hertwig. It is known from specimens preserving the skull and anterior portion...

chemistry, and Oscar Hertwig for histology and embryology. During his time at Berlin University, Michaelis worked in the lab of Oscar Hertwig, even receiving...

(1789–1871), founder of A.M. Hirschsprung & Sønner Oscar Hertwig (1849–1922), zoologist Richard Hertwig (1850-1937), zoologist Albert Windisch (1878–1967)...

Hertwig's rule, or the long axis rule states that a cell divides along its long axis. Introduced by the German zoologist Oscar Hertwig in 1884, the rule...

meiosis was discovered by Oscar Hertwig in 1876. Mitosis was discovered several years later in 1882 by Walther Flemming. Hertwig studied sea urchins, and...

through the membrane in order to form the male pronucleus. In 1876, Oscar Hertwig did a study on sea urchin eggs because the eggs of sea urchins are transparent...

October 22 – Lyman Abbott, American theologian (b. 1835) October 25 – Oscar Hertwig, German zoologist (b. 1849) October 30 – Géza Gárdonyi, Hungarian author...

Paul Flechsig Levin Goldschmidt Ernst Haeckel Otto Hahn Herbert Haupt Oscar Hertwig Gottlob Honold Theodor Koch-Grunberg Friedrich August Körnicke Georg...

principle in organisms. Other vitalists included Johannes Reinke and Oscar Hertwig. Reinke used the word neovitalism to describe his work, claiming that...

The function of the nucleus remained unclear. Between 1877 and 1878, Oscar Hertwig published several studies on the fertilization of sea urchin eggs, showing...

April 20 – Nikolai Nebogatov, Russian admiral (d. 1922) April 21 – Oscar Hertwig, German zoologist (d. 1922) April 24 Emma Whitcomb Babcock, American...

for the first time in sea urchin eggs in 1876 by the German biologist Oscar Hertwig. It was described again in 1883, at the level of chromosomes, by the...

observation of meiosis by two scientists independently, the German botanist Oscar Hertwig in 1876, and the Belgian zoologist Edouard Van Beneden in 1883. Most...

Ernst von Baer observed a therian mammalian egg for the first time. Oscar Hertwig (1876), in Germany, described the fusion of nuclei of spermatozoa and...

Species, which introduced the idea of evolution by natural selection. Oscar Hertwig publishes his findings in reproductive and developmental biology. In...

discovered and described for the first time in sea urchin eggs in 1876, by Oscar Hertwig. It was described again in 1883, at the level of chromosomes, by Van...

(ovulation) of luteinising hormone (LH). Meiosis was initially discovered by Oscar Hertwig in 1876 as he examined the fusion of the gametes in sea urchin eggs...

(biology) – operon – organ – organelle – organism – origin of life – Oscar Hertwig – osmosis – osmoregulation – Oswald Avery – outbreak – outline of biochemical...

Baer became the first person to observe human ova. Only in 1876 did Oscar Hertwig prove that fertilization is due to fusion of an egg and sperm cell....

Freiburg. In 1887 he attended the University of Jena under Ernst Haeckel, Oscar Hertwig and Christian Ernst Stahl. In 1888 he studied physics and chemistry...

through approaches that could be considered artificial gynogenesis. Oscar Hertwig first achieved artificial parthenogenesis in frogs in 1911, using eggs...

described for the first time in sea urchin eggs by the German biologist Oscar Hertwig. Josiah Willard Gibbs publishes On the Equilibrium of Heterogeneous...

William Stewart Halsted (born 1852), American surgeon. October 25 – Oscar Hertwig (born 1849), German zoologist. Nowell, Kristin; Jackson, Peter (1996)...

killing one as Roux had done. Others, including Thomas Hunt Morgan and Oscar Hertwig, attempted to separate the two cells, for the matter was of great importance...

by Wilhelm Hofmeister 1876: Discovery and description of meiosis by Oscar Hertwig 1877: Description of dyslexia by Adolf Kussmaul 1880s: Bacteriology...

of the microscopic studies of fertilisation and cellular division. Oscar Hertwig also observed this in the same year. In 1878, Fol obtained a post of...