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Clinica Para Madres (1934-1950)
By: Claudia Nunez-Eddy
| Published: Oct 12, 2016
The Clinica Para Madres (Mother’s Clinic) opened in Tucson, Arizona, in December of 1934 as the first birth control clinic in Arizona. After moving…
OrganizationSanger, Margaret, 1879-1966ArizonaPlanned Parenthood Federation of AmericaContraception
Beadle and Tatum's 1941 Experiments with Neurospora Revealed that Genes Produce Enzymes
By: Amy Pribadi
| Published: Oct 12, 2016
This illustration shows George Beadle and Edward Tatum's experiments with Neurospora crassa that indicated that single genes produce singl
Neurospora crassaMicrobiologyX-raysGeneticsEnzymes
Neurospora crassa Life Cycle
By: Amy Pribadi
| Published: Oct 12, 2016
This diagram shows the life cycle of Neurospora crassa, a mold that grows on bread. N.
Neurospora crassaMicrobiologyMicroscopyGrowthdevelopment
Beadle's One Gene-One Enzyme Hypothesis
By: Amy Pribadi
| Published: Oct 12, 2016
Between 1934 and 1945, George Beadle developed a hypothesis that each gene within the chromosomes of organisms each produced one enzyme.
CellsGeneticsEnzymesGenesAmino Acids
Beadle and Ephrussi’s Technique to Transplant Optic Discs between Fruit Fly Larvae
By: Amy Pribadi
| Published: Oct 11, 2016
In 1935, George Beadle and Boris Ephrussi developed a technique to transplant optic discs between fruit fly larvae.
Fruit-fliesImaginal DisksGeneticsdevelopmentMetamorphosis, Biological
Neurospora crassa
By: Amy Pribadi
| Published: Oct 11, 2016
Neurospora crassa is a red mold that scientists use to study genetics. N.
Neurospora crassaMicrobiologyMicroscopyCulture MediaMolds
Beadle and Ephrussi Show that Something Besides Eye Tissue Determines Eye Color in Fruit Flies
By: Amy Pribadi
| Published: Oct 11, 2016
In the 1930s, George Beadle and Boris Ephrussi discovered factors that affect eye colors in developing fruit flies.
Fruit-fliesImaginal DisksGeneticsdevelopmentMetamorphosis, Biological
Hans Asperger (1906-1980)
By: Alexandra Bohnenberger
| Published: Aug 27, 2016
Hans Asperger studied mental abnormalities in children in Vienna, Austria, in the early twentieth century. Asperger was one of the early…
Asperger's syndromeMental HealthPsychiatryChild psychiatryWorld Health Organization
Skinner v. Oklahoma (1942)
By: Rachel Gur-Arie
| Published: Aug 27, 2016
In 1942, the United States Supreme Court Case of Skinner v. Oklahoma ruled that states could not legally sterilize those inmates of prisons deemed…
LawCompulsory SterilizationSupreme Court DecisionsEugenicsInvoluntary Sterilization
Aristotle (384-322 BCE)
By: Dorothy Regan Haskett, Valerie Racine, Joanna Yang
| Published: Jul 07, 2016
Aristotle studied developing organisms, among other things, in ancient Greece, and his writings shaped Western philosophy and natural science for…
GreecedevelopmentphilosophyPlatoPhysics