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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
DNA and X and Y Chromosomes
By: Anna Guerrero
| Published: Feb 06, 2017
Y-chromosomes exist in the body cells of many kinds of male animals.
Y ChromosomeX chromosomeSex ChromosomesChromosomesSex Chromatin
"On the Replication of Desoxyribonucleic Acid (DNA)" (1954), by Max Delbruck
By: Victoria Hernandez
| Published: Sep 21, 2017
In 1954 Max Delbruck published On the Replication of Desoxyribonucleic Acid (DNA) to question the semi-conservative DNA replication mechanism…
LiteratureHolmes, Frederic LawrenceMeselson, MatthewStahl, Franklin W.Watson, James D., 1928-
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
"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
The Debate over DNA Replication Before the Meselson-Stahl Experiment (1953–1957)
By: Victoria Hernandez
| Published: Jan 03, 2018
Between 1953 and 1957, before the Meselson-Stahl experiment verified semi-conservative replication of DNA, scientists debated how DNA replicated. In…
ChromosomesCalifornia Institute of TechnologyCold Spring Harbor LaboratoryDNA Replication
Molecular Epigenetics and Development: Histone Conformations, DNA Methylation and Genomic Imprinting
By: Tristan Cooper-Roth
| Published: Sep 28, 2010
Introduced by Conrad Hal Waddington in 1942, the concept of epigenetics gave scientists a new paradigm of thought concerning embryonic development,…
EpigenomicsEpigenetics
"Mitochondrial DNA and Human Evolution" (1987), by Rebecca Louise Cann, Mark Stoneking, and Allan Charles Wilson
By: Dorothy R. Haskett
| Published: Oct 10, 2014
In 1987 Rebecca Louise Cann, Mark Stoneking, and Allan Charles Wilson published Mitochondrial DNA and Human Evolution in the journal Nature. The…
LiteratureMitochondriaHuman EvolutionEvolutionHomo sapiens
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
“A Linkage Between DNA Markers on the X Chromosome and Male Sexual Orientation” (1993), by Dean H. Hamer and Charles A. Thomas.
By: Christina Nguyen
| Published: Apr 13, 2017
In 1993, Dean H. Hamer and colleagues in the US published results from their research that indicated that men with speicifc genes were more likely to…
HomosexualityMale homosexualityGeneticsX chromosomeGenetic sex determination