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Hermann Joseph Muller's Study of X-rays as a Mutagen, (1926-1927)
By: Kevin M. Gleason
| Published: Mar 07, 2017
Hermann Joseph Muller conducted three experiments in 1926 and 1927 that demonstrated that exposure to x-rays, a form of high-energy radiation, can…
X-raysRadiationGeneticsMutationDrosophila
Paternal Sperm Telomere Elongation and Its Impact on Offspring Fitness
By: Joanna Yang, Zane Bartlett
| Published: Feb 07, 2017
Telomeres are structures at the ends of DNA strands that get longer in the DNA of sperm cells as males age. That phenomenon is different for most…
TelomereAgingSpermSpermatozoaTelomerase
"Sheep Cloned by Nuclear Transfer from a Cultured Cell Line" (1996), by Keith Campbell, Jim McWhir, William Ritchie, and Ian Wilmut
By: Zane Bartlett
| Published: Sep 19, 2014
In 1995 and 1996, researchers at the Roslin Institute in Edinburgh, Scotland, cloned mammals for the first time. Keith Campbell, Jim McWhir, William…
CloningClone CellsCloning, MolecularCloning, OrganismExperiments
Social Implications of Non-Invasive Blood Tests to Determine the Sex of Fetuses
By: Ceara O'Brien
| Published: Mar 23, 2014
By 2011, researchers in the US had established that non-invasive blood tests can accurately determine the gender of a human fetus as early as seven…
ContextDiagnostic sex determinationSex PreselectionFetusSex Determination Analysis
"Developmental Effects of Endocrine-Disrupting Chemicals in Wildlife and Humans" (1993), by Theo Colborn, Frederick S. vom Saal, and Ana M. Soto
By: Jennifer R. Craer
| Published: Jan 10, 2014
Developmental Effects of Endocrine-Disrupting Chemicals in Wildlife and Humans, was published in 1993 in Environmental Health Perspectives. In the…
LiteratureEndocrine disrupting chemicalsEmbryologyfetal developmentendocrine disruptors
Possums (1952), by Carl G. Hartman
By: Gia Goodman, Karen Wellner
| Published: Dec 02, 2013
Possums is a 174-page book consisting of a series of essays written about the Virginia opossum (Didelphis virginiana), the only living marsupial in…
LiteratureVirginia opossumEmbryologyMarsupialsNatural history
Embryonic Differentiation in Animals
By: Sarah Ly
| Published: Mar 03, 2011
Embryonic differentiation is the process of development during which embryonic cells specialize and diverse tissue structures arise. Animals are made…
differentiation
Images of Embryos in Life Magazine in the 1950s
By: Olivia Conley
| Published: Jun 30, 2010
Embryonic images displayed in Life magazine during the mid-twentieth century serve as a representation of technological advances and the growing…
PublicationsReproductionChicksHuman DevelopmentFetus
Humanae Vitae (1968), by Pope Paul VI
By: Katherine Brind'Amour, Benjamin Garcia
| Published: Nov 13, 2007
The "Humanae Vitae," meaning "Of Human Life" and subtitled "On the Regulation of Birth," was an encyclical promulgated in Rome, Italy, on 25 July…
LiteratureReproductive RightsreligionReproductionCatholicism
Karl Wilhelm Theodor Richard von Hertwig (1850-1937)
By: Benjamin Garcia, Katherine Brind'Amour
| Published: Nov 01, 2007
Karl Wilhelm Theodor Richard von Hertwig is an important figure in the history of embryology for his contributions of artificial hybridization of sea…
PeopleZoologyBiographyHybridizationSea Urchins