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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

Hox Genes and the Evolution of Vertebrate Axial Morphology Experiment (1995)

By: Joe Brinkman | Published: Jun 23, 2017

In 1995, researchers Ann Burke, Craig Nelson, Bruce Morgan, and Cliff Tabin in the US studied the genes that regulate the construction of vertebra in…

Homeobox genesMorphology (Animals)Genes, HomeoboxGrowth and DevelopmentExperiments

The Effects of Gene Regulation on Aging in Caenorhabditis elegans (2003)

By: Dasia Garcia | Published: Feb 16, 2017

In 2003, molecular biology and genetics researchers Coleen T. Murphy, Steven A. McCarroll, Cornelia I. Bargmann, Andrew Fraser, Ravi S. Kamath, Julie…

Caenorhabditis elegansCaenorhabditisInsulin-like growth factor-binding proteinsIGF-Binding ProteinsGenetic regulation

"Transfer of Fetal Cells with Multilineage Potential to Maternal Tissue" (2004), by Kiarash Khosrotehrani et al.

By: Alexis Abboud | Published: Nov 14, 2014

In 2004, a team of researchers at Tufts-New England Medical Center in Boston, Massachusetts, investigated the fetal cells that remained in the…

CellsStem CellsMaternal-Fetal ExchangeFetal cells from maternal bloodFetus

Studies in Spermatogenesis (1905), by Nettie Maria Stevens

By: Troy Cox | Published: Jan 22, 2014

Studies in Spermatogenesis is a two volume book written by Nettie Maria Stevens, and published by the Carnegie Institution of Washington in 1905 and…

LiteratureSpermatogenesisGenetic sex determinationSex DifferentiationEmbryos

Richard Woltereck's Concept of Reaktionsnorm

By: B. R. Erick Peirson | Published: Sep 06, 2012

Richard Woltereck first described the concept of Reaktionsnorm (norm of reaction) in his 1909 paper 'Weitere experimentelle Untersuchungen uber Art-…

Woltereck, Richard, 1877-1944EvolutionDaphniaEmbryologyHeredity

Ethics and Induced Pluripotent Stem Cells

By: Katherine Brind'Amour | Published: Jun 10, 2009

The recent development of induced pluripotent stem cells (iPSCs) and related technologies has caught the attention of scientists, activists,…

ethicsStem Cells

Matthew Stanley Meselson (1930– )

By: Victoria Hernandez | Published: May 23, 2017

Matthew Stanley Meselson conducted DNA and RNA research in the US during the twentieth and twenty-first centuries. He also influenced US policy…

Holmes, Frederic LawrenceMeselson, MatthewStahl, Franklin W.Watson, James D., 1928-Crick, Francis, 1916-2004

The Pasteur Institute (1887- )

By: Valerie Racine | Published: Aug 19, 2014

L'Institut Pasteur (The Pasteur Institute) is a non-profit private research institution founded by Louis Pasteur on 4 June 1887 in Paris, France. The…

OrganizationBacteriaGenetic regulationOperonsMolecular genetics