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"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
“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
"Developmental Capacity of Nuclei Transplanted from Keratinized Skin Cells of Adult Frogs" (1975), by John Gurdon, Ronald Laskey, and O. Raymond Reeves
By: Sean Cohmer
| Published: Jun 14, 2011
In 1975 John Gurdon, Ronald Laskey, and O. Raymond Reeves published "Developmental Capacity of Nuclei Transplanted from Keratinized Skin Cells of…
Nuclear Transfer TechniquesExperimentsPublicationsFrogsNuclear Transplantation
Temperature-Dependent Sex Determination in Reptiles
By: Karla T. Moeller
| Published: Feb 01, 2013
The sex of a reptile embryo partly results from the production of sex hormones during development, and one process to produce those hormones depends…
Sex DifferentiationReproductionAdaptationfetal developmentEmbryology
Edgar Allen and Edward A. Doisy's Extraction of Estrogen from Ovarian Follicles, (1923)
By: Brendan Van Iten
| Published: Mar 02, 2017
In the early 1920s, researchers Edgar Allen and Edward Adelbert Doisy conducted an experiment that demonstrated that ovarian follicles, which produce…
OvariesCorpus LuteumEndometriumEstrogenHormones, Sex
Christian Peeters and Bert Hölldobler's Experiments on Reproduction in Indian Jumping Ants (1991–1994)
By: Kelle Dhein
| Published: Mar 23, 2017
Between 1991 and 1994, Christian Peeters and Bert Hölldobler studied the reproductive behaviors of the Indian jumping ant (Harpegnathos saltator), a…
AntsPoneraInsectsWorkers (Insects)Queens (Insects)
A Series of YouTube Videos Detailing the “CRISPR Babies” Experiment (2018), by He Jiankui
By: Risa Aria Schnebly, Brianna Ellis
| Published: Jul 31, 2021
In 2018, He Jiankui uploaded a series of videos to a YouTube channel titled “The He Lab” that detailed one of the first instances of a successful…
Literaturegene editingGenome EditingCRISPR (Genetics)CRISPR-associated protein 9
Embryonic Sex Differentiation and Sex Hormones (1947), by Carl R. Moore
By: Mary Drago
| Published: May 03, 2014
In 1947, Carl Richard Moore, a researcher at the University of Chicago, in Chicago, Illinois, wrote Embryonic Sex Differentiation and Sex Hormones,…
LiteratureEndocrinologyHormones, SexGonadal Steroid HormonesFreemartinism
Lysogenic Bacteria as an Experimental Model at the Pasteur Institute (1915-1965)
By: Valerie Racine
| Published: Oct 10, 2014
Lysogenic bacteria, or virus-infected bacteria, were the primary experimental models used by scientists working in the laboratories of the Pasteur…
ContextInstitut Pasteur (Paris, France)BacteriaEscherichia coliMonod, Jacques
"The Adaptive Significance of Temperature-Dependent Sex Determination in a Reptile" (2008), by Daniel Warner and Richard Shine
By: Karla Moeller
| Published: Oct 07, 2013
In 2008 researchers Daniel Warner and Richard Shine tested the Charnov-Bull model by conducting experiments on the Jacky dragon (Amphibolurus…
ExperimentsSex DifferentiationReproductionAdaptationfetal development