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Categorization of Conservative, Semi-Conservative, and Dispersive DNA Replication Theories (1953–1956)
By: Victoria Hernandez
| Published: Oct 31, 2019
In 1956, Gunther Stent, a scientist at the University of California Berkeley in Berkeley, California, coined the terms conservative, semi-…
DNADNA ReplicationDNA HelicasesGenesHeredity
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
“Genetical Implications of the Structure of Deoxyribonucleic Acid” (1953), by James Watson and Francis Crick
By: Victoria Hernandez
| Published: Jan 13, 2020
In May 1953, scientists James Watson and Francis Crick wrote the article “Genetical Implications of the Structure of Deoxyribonucleic Acid,”…
LiteratureDNANucleic AcidsDeoxyriboseGenetics
Photograph 51, by Rosalind Franklin (1952)
By: Victoria Hernandez
| Published: Dec 30, 2019
On 6 May 1952, at King’s College London in London, England, Rosalind Franklin photographed her fifty-first X-ray diffraction pattern of…
LiteratureDNADNA HelicasesX Ray CrystallographyCrystallography, X-Ray
Meselson, Stahl, and the Replication of DNA: A History of "The Most Beautiful Experiment in Biology" (2001), by Frederic Lawrence Holmes
By: Victoria Hernandez
| Published: Jul 23, 2017
In 2001, Yale University Press published Frederic Lawrence Holmes' book, Meselson, Stahl, and the Replication of DNA: A History of "The Most…
LiteratureWatson, James D., 1928-Crick, Francis, 1916-2004Marine Biological Laboratory (Woods Hole, Mass.)DNA Replication
“Molecular Configuration in Sodium Thymonucleate” (1953), by Rosalind Franklin and Raymond Gosling
By: Victoria Hernandez
| Published: Nov 30, 2019
In April 1953, Rosalind Franklin and Raymond Gosling, published “Molecular Configuration in Sodium Thymonucleate,” in the scientific journal Nature.…
LiteratureDNADNA HelicasesX Ray CrystallographyMolecular structure
"Presence of Fetal DNA in Maternal Plasma and Serum" (1997), by Dennis Lo, et al.
By: Cassidy Possehl
| Published: Mar 07, 2017
In the late 1990s researchers Yuk Ming Dennis Lo and his colleagues isolated fetal DNA extracted from pregnant woman’s blood. The technique enabled…
AmniocentesisChorionic Villus SamplingFetusObstetricsDNA
“Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid” (1953), by James Watson and Francis Crick
By: Victoria Hernandez
| Published: Oct 31, 2019
In April 1953, James Watson and Francis Crick published “Molecular Structure of Nucleic Acids: A Structure of Deoxyribose Nucleic Acid” or “A…
LiteratureDNAComplementary DNADNA ReplicationDeoxyribonucleic Acid
Franklin William Stahl (1929– )
By: Victoria Hernandez
| Published: Jul 20, 2017
Franklin William Stahl studied DNA replication, bacteriophages, and genetic recombination in the US during the mid-twentieth and early twenty-first…
DNA SequenceNucleotide sequenceDNA ReplicationDNA--SynthesisDNA replication--Regulation
The Hershey-Chase Experiments (1952), by Alfred Hershey and Martha Chase
By: Victoria Hernandez
| Published: Jun 23, 2019
In 1951 and 1952, Alfred Hershey and Martha Chase conducted a series of experiments at the Carnegie Institute of Washington in Cold Spring Harbor,…
BacteriophagesDNACold Spring Harbor LaboratoryProtein PrecursorsAmino Acid Sequence