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Oswald Theodore Avery (1877-1955)
By: Samantha Hauserman
| Published: Dec 12, 2013
Oswald Theodore Avery studied strains of pneumococcus of the genus Streptococcus in the US in the first half of the twentieth century. This bacterium…
Bacterial TransformationDNAHeredityPathologyImmunology
"Gene Regulation for Higher Cells: A Theory" (1969), by Roy J. Britten and Eric H. Davidson
By: Justin Wolter
| Published: Sep 10, 2013
In 1969, Roy J. Britten and Eric H. Davidson published Gene Regulation for Higher Cells: A Theory, in Science. A Theory proposes a minimal model…
LiteratureGenetic regulationCell differentiationEvolutionGenes
Wilhelm Johannsen's Genotype-Phenotype Distinction
By: B. R. Erick Peirson
| Published: Dec 07, 2012
Wilhelm Johannsen in Denmark first proposed the distinction between genotype and phenotype in the study of heredity in 1909. This distinction is…
Johannsen, W. (Wilhelm), 1857-1927Genotype-environment interactionPhenotypeHeredityGenetics
Victor Jollos (1887-1941)
By: B. R. Erick Peirson
| Published: Sep 16, 2014
Victor Jollos studied fruit flies and microorganisms in Europe and the US, and he introduced the concept of Dauermodifikationen in the early 1900s.…
ParameciumDrosophilaHeredityProtistaprotozoology
David Starr Jordan (1851-1931)
By: Jill Briggs
| Published: Jun 26, 2013
David Starr Jordan studied fish and promoted eugenics in the US during the late nineteenth and early twentieth centuries. In his work, he embraced…
EugenicsEvolutionEmbryosEmbryologyHeredity
Wilhelm Ludvig Johannsen (1857-1927)
By: B. R. Erick Peirson
| Published: Nov 16, 2012
Wilhelm Ludvig Johannsen studied plants and helped found the field of genetics, contributing methods and concepts to the study of heredity around the…
GeneticsHeredityPhenotypeGenotype-environment interactionEvolution
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
The Galton Society for the Study of the Origin and Evolution of Man (1918–1935)
By: Aliya R. Hoff
| Published: Jun 03, 2021
Charles Benedict Davenport, Madison Grant, and Henry Fairfield Osborn founded the Galton Society for the Study of the Origin and Evolution of Man, or…
OrganizationEugenicsDavenport, Charles Benedict, 1866-1944Laughlin, Harry Hamilton, 1880-1943segregation
Harry Hamilton Laughlin (1880-1943)
By: Rachel Gur-Arie
| Published: Dec 19, 2014
Harry Hamilton Laughlin helped lead the eugenics movement in the United States during the early twentieth century. The US eugenics movement of the…
Laughlin, Harry Hamilton, 1880-1943American Eugenics SocietyEugenicsDavenport, Charles Benedict, 1866-1944Eugenics--United States--History
Theodor Heinrich Boveri (1862-1915)
By: Inbar Maayan
| Published: Mar 03, 2011
Theodor Boveri investigated the mechanisms of heredity. He developed the chromosomal theory of inheritance and the idea of chromosomal individuality…
PeopleHeredityBiography