• Thumbnail for Karl Ernst von Baer
    Karl Ernst Ritter von Baer Edler von Huthorn (Russian: Карл Макси́мович Бэр; 28 February [O.S. 17 February] 1792 – 28 November [O.S. 16 November] 1876)...
    29 KB (2,897 words) - 22:02, 3 November 2024
  • Thumbnail for Von Baer's laws (embryology)
    developmental biology, von Baer's laws of embryology (or laws of development) are four rules proposed by Karl Ernst von Baer to explain the observed...
    15 KB (1,761 words) - 04:30, 28 October 2024
  • Thumbnail for Ernst Haeckel
    of organisms on a linear chain of being, and Karl Ernst von Baer's opposing view, stated in von Baer's laws of embryology, that the early general forms...
    72 KB (8,134 words) - 00:40, 21 October 2024
  • Thumbnail for Embryology
    sequence of steps. Modern embryology developed from the work of Karl Ernst von Baer, though accurate observations had been made in Italy by anatomists...
    44 KB (6,363 words) - 12:46, 6 September 2024
  • Thumbnail for Embryo drawing
    comparative anatomy as the primary foundation of morphology. Ernst Haeckel, along with Karl von Baer and Wilhelm His, are primarily influential in forming the...
    29 KB (3,745 words) - 17:31, 24 September 2024
  • scientist Karl Ernst von Baer in 1860. Although it is possible that an aggregate measurement of all rivers would lead to a correlation with the Baer–Babinet...
    3 KB (387 words) - 07:25, 3 May 2023
  • Königsberg, where his influences included Ludwig Wilhelm Sachs, Karl Ernst von Baer and Karl Friedrich Burdach. In 1839, he obtained his habilitation and...
    4 KB (368 words) - 19:09, 20 August 2024
  • Edmond Grant, but was opposed by Karl Ernst von Baer's ideas of divergence, and attacked by Richard Owen in the 1830s. Ernst Haeckel (1834–1919) attempted...
    25 KB (2,923 words) - 01:23, 31 October 2024
  • Thumbnail for Ectoderm
    early embryo was continued by a Prussian–Estonian biologist named Karl Ernst von Baer. Baer took Pander's concept of the germ layers and through extensive...
    16 KB (1,844 words) - 03:04, 1 September 2024
  • Thumbnail for Siberian sturgeon
    Siberian sturgeon (category Taxa named by Johann Friedrich von Brandt)
    in China. The species epithet honors the German Russian biologist Karl Ernst von Baer. The Siberian sturgeon has previously been divided into two subspecies...
    7 KB (761 words) - 04:08, 7 September 2024
  • Thumbnail for Zoological Museum (Saint Petersburg)
    included the museum. In the front hall of the museum is a monument to Karl Ernst von Baer by the entrance, as well as skeletons of cetaceans, including the...
    5 KB (383 words) - 01:12, 19 August 2023
  • among the different embryos arose late in development. In 1828, Karl Ernst von Baer created his laws of embryology, which summarized the results of his...
    19 KB (2,219 words) - 14:06, 24 August 2024
  • Thumbnail for Egg cell
    well as a bold assumption that mammals also reproduced via eggs. Karl Ernst von Baer discovered the mammalian ovum in 1827. The fusion of spermatozoa...
    14 KB (1,456 words) - 06:18, 13 August 2024
  • perception, emphasizing species-specific differences, was conducted by Karl Ernst von Baer. Time perception is typically categorized in three distinct ranges...
    85 KB (10,038 words) - 15:50, 2 November 2024
  • Thumbnail for Albert von Kölliker
    Scotland, as well as to undertake, conjointly with his friend Carl Theodor Ernst von Siebold, the editorship of the Zeitschrift für Wissenschaftliche Zoologie...
    12 KB (1,386 words) - 09:03, 13 September 2024
  • Moritz Freiherr von Grotthuss (*born 1970), founder of Gestigon and Bareways Reinhold von Anrep-Elmpt (1834–1888), explorer Karl Ernst von Baer (1792–1876)...
    26 KB (2,935 words) - 21:27, 17 October 2024
  • Thumbnail for Tartu
    cyclist Karl Ernst von Baer (1792–1876), Baltic German scientist and explorer George Browne, (1698–1792), Irish-born Governor of Dorpat Karl Ernst Claus...
    64 KB (4,758 words) - 10:26, 21 October 2024
  • Thumbnail for Human fertilization
    the head of a sperm. The human ova was first observed in 1827 by Karl Ernst von Baer. Only in 1876 did Oscar Hertwig prove that fertilization is due to...
    25 KB (2,753 words) - 20:23, 30 October 2024
  • and college president Julius Baer (1857–1922), Swiss banker Karl Ernst von Baer (1792–1876), Estonian biologist Karl M. Baer (1885–1956), German-Israeli...
    4 KB (506 words) - 04:13, 28 October 2024
  • Thumbnail for Dungan people
    1835 mentioned Muslim "Túngánis" in "Chinese Tartary". In 1839, Karl Ernst von Baer in his German-language account of Russian Empire and adjacent Asian...
    51 KB (5,028 words) - 17:30, 25 October 2024
  • Thumbnail for Permafrost
    initial permafrost research was played by Alexander von Middendorff (1815–1894) and Karl Ernst von Baer, a Baltic German scientist at the University of Königsberg...
    114 KB (12,518 words) - 23:47, 20 October 2024
  • Thumbnail for Animal
    embryologist Karl Ernst von Baer in 1828, the zoologist Louis Agassiz in 1857, and the comparative anatomist Richard Owen in 1860. In 1874, Ernst Haeckel divided...
    128 KB (11,452 words) - 07:21, 26 October 2024
  • Thumbnail for Orthogenesis
    Revolution] of the foundations of the past." The Baltic German biologist Karl Ernst von Baer (1792–1876) argued for an orthogenetic force in nature, reasoning...
    58 KB (5,247 words) - 21:47, 22 October 2024
  • Thumbnail for Alexander von Middendorff
    under the patronage of Karl Ernst von Baer, he became assistant professor of zoology at Kiev University. In the summer of 1840, Baer asked Middendorff to...
    12 KB (1,028 words) - 17:22, 20 October 2024
  • The book examines the criticism of the theory by the Baltic German Karl Ernst von Baer and the Swiss-American Louis Agassiz, and relates 19th century phylogeny...
    14 KB (1,581 words) - 14:17, 15 December 2022
  • Thumbnail for Caspar Friedrich Wolff
    piece of embryological work up to that of Heinz Christian Pander and Karl Ernst von Baer. Wolff’s "De Formatione Intestinorum" rather than his "Theoria Generationis"...
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  • Thumbnail for Biological rules
    rules in modern times are those of Karl Ernst von Baer (from 1828 onwards) on embryonic development (see von Baer's laws), and of Constantin Wilhelm Lambert...
    30 KB (3,197 words) - 12:33, 28 August 2024
  • the Kalmyk Әмтә Нур Ämtä Nur, lit. "sweet lake"). Noted scientist Karl Ernst von Baer visited the area in 1856 and tried unsuccessfully to convince the...
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  • Thumbnail for Élie Metchnikoff
    Kovalevsky from the University of Saint Petersburg. Together they won the Karl Ernst von Baer prize for their theses on the development of germ layers in invertebrate...
    40 KB (4,071 words) - 20:03, 20 October 2024
  • Thumbnail for Evolutionary developmental biology
    bird, and mammal before becoming clearly human. The embryologist Karl Ernst von Baer opposed this, arguing in 1828 that there was no linear sequence as...
    57 KB (6,279 words) - 02:33, 31 October 2024