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Walter Jakob Gehring (1939-2014)
By: Joe Brinkman
| Published: Dec 22, 2014
Walter Jakob Gehring discovered the homeobox, a DNA segment found in a specific cluster of genes that determine the body plan of animals, plants, and…
Homeobox genesDrosophilaGeneticsGenesGenes, Homeobox
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
Mitochondrial DNA (mtDNA)
By: Dorothy R. Haskett
| Published: Dec 19, 2014
Mitochondrial DNA (mtDNA) is located outside the nucleus in the liquid portion of the cell (cytoplasm) inside cellular organelles called Mitochondria…
Mitochondrial DNAMitochondriaMitochondrial DisordersMitochondrial pathologyMitochondrial DNA--Abnormalities
Human Fertilisation and Embryology Act (1990)
By: Jonathan LaTourelle
| Published: Dec 19, 2014
The Human Fertilisation and Embryology Act 1990 established the legal framework that governs infertility treatment, medical services ancillary to…
LawEmbryo transplantationReproductive technologyWarnock, Mary, 1808-1900Human reproductive technology
Wilhelm Friedrich Phillip Pfeffer (1845-1920)
By: Sara Parker
| Published: Nov 30, 2014
Wilhelm Friedrich Phillip Pfeffer studied plants in Germany during the late nineteenth and early twentieth centuries. He started his career as an…
Plant physiologyBotanyPlants--Irritability and movementsOsmotic PressureChemotaxis
Whitner v. South Carolina (1997)
By: Chanapa Tantibanchachai
| Published: Nov 30, 2014
In the case Whitner v. South Carolina in 1997, the South Carolina State Supreme Court defined the concept of a child to include viable fetuses. This…
LawEmbryosReproductive RightsPregnancyAbortion
Intraspecies Chimeras Produced in Laboratory Settings (1960-1975)
By: Sarah Taddeo
| Published: Nov 25, 2014
When cells-but not DNA-from two or more genetically distinct individuals combine to form a new individual, the result is called a chimera. Though…
ContextChimerismEmbryosEmbryonic Stem CellsMosaicism
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
American Eugenics Society (1926-1972)
By: Rachel Gur-Arie
| Published: Nov 22, 2014
The American Eugenics Society (AES) was established in the US by Madison Grant, Harry H. Laughlin, Henry Crampton, Irving Fisher, and Henry F.…
OrganizationsEugenicsHeredity, HumanHeredityInvoluntary Sterilization
Theophilus Shickel
Painter (1889-1969)
By: Dorothy Haskett
| Published: Nov 22, 2014
Theophilus Shickel Painter studied the structure and function of chromosomes in the US during in the early to mid-twentieth century. Painter worked…
ChromosomesKaryotypesSex ChromosomesGeneticsLinkage (Genetics)