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Telomerase in Human Development
By: Zane Bartlett
| Published: Mar 23, 2015
Telomerase is an enzyme that regulates the lengths of telomeres in the cells of many organisms, and in humans it begins to function int the early…
TelomeraseTelomereDNAMolecular BiologySomatic embryogenesis
“A Sex Chromosome Anomaly in a Case of Gonadal Dysgenesis (Turner’s Syndrome)” (1959), by Charles Edmund Ford, K. W Jones, Paul E. Polani, J. C De Almeida, and J. H Briggs
By: Megha Pillai
| Published: Aug 06, 2024
In 1959, Charles Edmund Ford and colleagues published “A Sex Chromosome Anomaly in a Case of Gonadal Dysgenesis (Turner’s Syndrome),” hereafter “A…
Turner SyndromeGonadal DysgenesisGonadal Dysgenesis, XOGonadal Dysgenesis, 45, XAbnormalities, Sex Chromosome
"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
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
"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
“Studies on the Chemical Nature of the Substance Inducing Transformation of Pneumococcal Types: Induction of Transformation by a Desoxyribonucleic Acid Fraction Isolated from Pneumococcus Type III” (1944) by Oswald Avery, Colin MacLeod and Maclyn McCarty
By: Victoria Hernandez
| Published: Jul 08, 2019
In 1944, Oswald Avery, Colin MacLeod, and Maclyn McCarty published an article in which they concluded that genes, or molecules that dictate how…
LiteratureTransformation, BacterialBacterial TransformationStreptococcus pneumoniaeBacterial genetics
“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
The Y-Chromosome in Animals
By: Dorothy R. Haskett
| Published: May 28, 2015
The Y-chromosome is one of a pair of chromosomes that determine the genetic sex of individuals in mammals, some insects, and some plants. In the…
Y ChromosomeSex ChromosomesEmbryosDNAChromosomes
"CRISPR /Cas9-mediated Gene Editing in Human Tripronuclear Zygotes" (2015), by Junjiu Huang et al.
By: Meilin Zhu
| Published: Nov 08, 2017
In 2015, Junjiu Huang and his colleagues reported their attempt to enable CRISPR/cas 9-mediated gene editing in nonviable human zygotes for the first…
LiteratureDoudna, Jennifer A.Charpentier, Emmanuelle, 1968-Clustered Regularly Interspaced Short Palindromic RepeatsCRISPR-Cas Systems
Telomeres and Telomerase in Cellular Aging (Senescence)
By: Zane Bartlett
| Published: Feb 11, 2015
Telomeres are sequences of DNA on the ends of chromosomes that protect chromosomes from sticking to each other or tangling, which could cause…
TelomeraseGreider, Carol W.Wistar Institute of Anatomy and BiologyAgingDNA