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Charles Darwin's Theory of Pangenesis
By: Yawen Zou
| Published: Jul 20, 2014
In 1868 in England, Charles Darwin proposed his pangenesis theory to describe the units of inheritance between parents and offspring and the…
HeredityDarwin, Charles, 1809-1882ReproductionEvolutionNatural selection
Paul Kammerer's Experiments on the Midwife Toad (1905-1910)
By: Federica Turriziani Colonna
| Published: Dec 30, 2014
In the first decade of the twentieth century, Paul Kammerer, a zoologist working at the Vivarium in Vienna, Austria, conducted research on…
Kammerer, Paul, 1880-1926Midwife toadsKammerer, Paul, 1880-1926. Streitfrage der Vererbung erworbener Eigenschaften. EnglishInheritance of acquired charactersAdaptation
Johann Friedrich Blumenbach (1752-1840)
By: Kate MacCord
| Published: Jan 22, 2014
In eighteenth century Germany, Johann Friedrich Blumenbach studied how individuals within a species vary, and to explain such variations, he proposed…
AnthropologyAnatomy, ComparativeVariation (Biology)EmbryosDevelopmental Biology
Richard Woltereck's Concept of Reaktionsnorm
By: B. R. Erick Peirson
| Published: Sep 06, 2012
Richard Woltereck first described the concept of Reaktionsnorm (norm of reaction) in his 1909 paper 'Weitere experimentelle Untersuchungen uber Art-…
Woltereck, Richard, 1877-1944EvolutionDaphniaEmbryologyHeredity
Paul Kammerer (1880-1926)
By: Federica Turriziani Colonna
| Published: Nov 25, 2014
Paul Kammerer conducted experiments on amphibians and marine animals at the Vivarium, a research institute in Vienna, Austria, in the early twentieth…
Kammerer, Paul, 1880-1926Kammerer, Paul, 1880-1926. Streitfrage der Vererbung erworbener Eigenschaften. EnglishInheritance of acquired charactersAdaptationMidwife toads