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"On the Origin of Mitosing Cells" (1967), by Lynn Sagan
By: Dorothy Regan Haskett
| Published: Apr 15, 2014
On the Origin of Mitosing Cells by Lynn Sagan appeared in the March 1967 edition of the Journal of Theoretical Biology. At the time the article was…
LiteratureMitosisEndosymbiosisflagellasymbiosis
The Carapacial Ridge of Turtles
By: Guido Caniglia
| Published: Jan 01, 2012
Two main elements characterize the skeletal morphology of turtles: the carapace and the plastron. For a turtle, the carapacial ridge begins in the…
TurtlesMorphology (Animals)EmbryosGerm CellsEmbryology
Allan Charles Wilson (1934-1991)
By: Dorothy Haskett
| Published: Jul 24, 2014
Allan C. Wilson studied genes, proteins, and body structures of animals and humans in the US during the second half of the twentieth century. Wilson…
Human EvolutionEvolutionChimpanzeesMitochondriaElectrophoresis
Susumu Ohno (1928–2000)
By: Devangana Shah
| Published: Jun 03, 2025
Susumu Ohno studied chromosome structure and evolution during the twentieth century in the United States. Ohno was one of the first researchers to…
Sequence Analysis, DNAGenes, DuplicateGene DuplicationBarr BodiesBiological Evolution
The Diversity of Animals: An Evolutionary Study (1962), by Edward Stuart Russell
By: Mark A. Ulett
| Published: Jun 27, 2010
In 1962 the journal Acta Biotheoretica published the final work of the biologist Edward Stuart Russell, a full eight years after his death. Entitled…
LiteratureRussell, E. S. (Edward Stuart), 1887-1954Biological EvolutionPublicationsEvolution
Ontogeny and Phylogeny (1977), by Stephen Jay Gould
By: M. Elizabeth Barnes
| Published: Oct 21, 2014
Ontogeny and Phylogeny is a book published in 1977, in which the author Stephen J. Gould, who worked in the US, tells a history of the theory of…
LiteratureEvolutionOntogenyEmbryologyMeckel, J. F. (Johann Friedrich), 1781-1833
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
Petr Alekseevich Kropotkin (1842-1921)
By: Jonathan LaTourelle
| Published: Jun 01, 2015
Petr Kropotkin proposed the theory of Pleistocene ice age, alternative theories of evolution based on embryology, and he advocated anarchist and…
EvolutionHeredityInheritance of acquired charactersPaleogeography--PleistoceneAnarchism
Stephen Jay Gould (1941-2002)
By: M. Elizabeth Barnes
| Published: Feb 18, 2014
Stephen Jay Gould studied snail fossils and worked at Harvard University in Cambridge, Massachusetts during the latter half of the twentieth century…
Punctuated equilibrium (Evolution)Spandrel beamsOntogenyPhylogenyFossils
Ernst Heinrich Philipp August Haeckel (1834-1919)
By: Karen Wellner
| Published: Jun 16, 2010
Ernst Heinrich Philipp August Haeckel was a prominent comparative anatomist and active lecturer in the late nineteenth and early twentieth centuries…
PeopleHaeckel, Ernst, 1834-1919Biological EvolutionBiographyEvolution