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"Genetic Evidence Equating SRY and the Testis-Determining Factor" (1990), by Phillippe Berta et al.
By: Troy Cox
| Published: Jan 10, 2014
In the late 1980s, Peter Goodfellow in London, UK led a team of researchers who showed that the SRY gene in humans codes a protein that causes testes…
TestisY ChromosomeEmbryosChromosomesSex Chromosomes
Intraspecies Chimeras Produced in Laboratory Settings (1960-1975)
By: Sarah Taddeo
| Published: Nov 25, 2014
When cells-but not DNA-from two or more genetically distinct individuals combine to form a new individual, the result is called a chimera. Though…
ContextChimerismEmbryosEmbryonic Stem CellsMosaicism
"Male Development of Chromosomally Female Mice Transgenic for Sry gene" (1991), by Peter Koopman, et al.
By: Troy Cox
| Published: Jan 28, 2014
Early 1990s research conducted by Peter Koopman, John Gubbay, Nigel Vivian, Peter Goodfellow, and Robin Lovell-Badge, showed that chromosomally…
Y ChromosomeTestisEmbryosChromosomesSex Chromosomes
Christiane Nusslein-Volhard (1942- )
By: May Catherine, Jack Resnik
| Published: Feb 16, 2012
Christiane Nusslein-Volhard studied how genes control embryonic development in flies and in fish in Europe during the twentieth and twenty-first…
DrosophilaEmbryologyGenesMorphogenesisRNA polymerases
Charles Robert Cantor (1942- )
By: Alexis Abboud
| Published: Jun 11, 2015
Charles Robert Cantor helped sequence the human genome, and he developed methods to non-invasively determine the genes in human fetuses. Cantor…
Human Genome ProjectDNAfetal developmentFetusEmbryos
The First Successful Cloning of a Gaur (2000), by Advanced Cell Technology
By: Caroline Appleton
| Published: Jul 26, 2013
Advanced Cell Technology (ACT), a stem cell biotechnology company in Worcester, Massachusetts, showed the potential for cloning to contribute to…
Cell nuclei--TransplantationCloningGaurAdvanced Cell Technology (Firm)Embryos
Julia Bell (1879-1979)
By: Jesse King
| Published: Dec 27, 2012
Julia Bell worked in twentieth-century Britain, discovered Fragile X Syndrome, and helped find heritable elements of other developmental and genetic…
Genetic Disordersfetal developmentRubella in pregnancyRubella virusHeredity
The Carapacial Ridge of Turtles
By: Guido Caniglia
| Published: Jan 01, 2012
Two main elements characterize the skeletal morphology of turtles: the carapace and the plastron. For a turtle, the carapacial ridge begins in the…
TurtlesMorphology (Animals)EmbryosGerm CellsEmbryology
"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
Chemical Induction
By: Adam R. Navis
| Published: Oct 30, 2007
Research in chemical induction seeks to identify the compound or compounds responsible for differentiation in a developing embryo. Soren Lovtrup…
Cell differentiationEmbryosDevelopmental BiologyNotochordWaddington, C. H. (Conrad Hal), 1905-1975