Filter my results
Search
Displaying 141 - 150 of 335
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
“A Proposed Structure for the Nucleic Acids” (1953) by Linus Pauling and Robert Brainard Corey
By: Victoria Hernandez
| Published: Aug 26, 2019
In February 1953, Linus Pauling and Robert Brainard Corey, two scientists working at the California Institute of Technology in Pasadena, California,…
LiteratureDNAGeneticsX-ray crystallography--TechniqueCrystallography, X-Ray
Equilibrium Density Gradient Centrifugation in Cesium Chloride Solutions Developed by Matthew Meselson and Franklin Stahl
By: Victoria Hernandez
| Published: Dec 19, 2017
Matthew Meselson, Franklin Stahl, and Jerome Vinograd, developed cesium chloride, or CsCl, density gradient centrifugation in the 1950s at the…
TechnologyDNA ReplicationDNA replication--RegulationCentrifugation, Density GradientOrganonitrogen compounds
HIP Randomized Breast Cancer Screening Trial (1963–1982)
By: Dina A. Lienhard
| Published: Aug 08, 2017
From 1963 to 1982, researchers in New York City, New York, carried out a randomized trial of mammography screening. Mammography is the use of X-ray…
ExperimentsHIPMammographyBreastcarcinoma
Interspecies SCNT-derived Humanesque Blastocysts
By: Sarah Taddeo, Jason S. Robert, Nicole Diehnelt
| Published: Jun 23, 2017
Since the 1950s, scientists have developed interspecies blastocysts in laboratory settings, but not until the 1990s did proposals emerge to engineer…
BlastocystDiseasesbioethicsTadpoleCell nuclei--Transplantation
William Smellie (1697–1763)
By: Yvette Tran
| Published: May 30, 2017
William Smellie helped to incorporate scientific medicine into the process of childbirth in eighteenth century Britain. As a male physician…
MidwivesObstetrical ForcepsChildbirthObstetricsLabor (Obstetrics)
The Meselson-Stahl Experiment (1957–1958), by Matthew Meselson and Franklin Stahl
By: Victoria Hernandez
| Published: Apr 18, 2017
In an experiment later named for them, Matthew Stanley Meselson and Franklin William Stahl in the US demonstrated during the 1950s the semi-…
DNA ReplicationMeselson, MatthewStahl, Franklin W.DNA--SynthesisDNA
Hedgehog Signaling Pathway
By: Dorothy R. Haskett
| Published: Jul 30, 2015
The hedgehog signaling pathway is a mechanism that directs the development of embryonic cells in animals, from invertebrates to vertebrates. The…
EmbryologyEmbryosWieschaus, Eric F.Cellular signal transductionDrosophila melanogaster
Francis Sellers Collins (1950- )
By: Tito Carvalho
| Published: Apr 10, 2014
Francis Sellers Collins helped lead the International Human Genome Sequencing Consortium, which helped describe the DNA sequence of the human genome…
Human Genome ProjectNucleotide sequenceSequence Analysis, DNAGenome
"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