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"Interspecific Chimeras in Mammals: Successful Production of Live Chimeras Between Mus musculus and Mus caroli" (1980), by Janet Rossant and William I. Frels
By: Nicole Newkirk
| Published: Oct 30, 2007
In 1980 Janet Rossant and William I. Frels published their paper, "Interspecific Chimeras in Mammals: Successful Production of Live Chimeras Between…
ChimeraExperimentsMice
Anencephaly
By: Jesse King
| Published: Feb 13, 2013
Anencephaly is an open neural tube defect, meaning that part of the neural tube does not properly close or that it has reopened during early…
fetal developmentFetus--AbnormalitiesBirth DefectsEmbryologyPregnancy
"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
“Use of reproductive technology for sex selection for nonmedical reasons” (2015), by the Ethics Committee of the American Society for Reproductive Medicine
By: Alysse Blight
| Published: May 27, 2019
In June 2015, the Ethics Committee of the American Society for Reproductive Medicine, or ASRM, published “Use of reproductive technology for sex…
LiteratureSex PreselectionFertilization in VitroReproductive technologyHuman reproductive technology
Trisomy 21 (Down Syndrome)
By: Grace Fitzgerald
| Published: Aug 01, 2022
As of 2022, Trisomy 21 is the most common type of trisomy, or a condition where the person has three instead of the normal two copies of one of the…
Genetic DisordersGenetic disorders in childrenGenetic disorders in pregnancyGenetic disorders--DiagnosisDown syndrome
Stanley Paul Leibo (1937–2014)
By: Risa Aria Schnebly
| Published: Feb 05, 2021
Stanley Paul Leibo studied the cryopreservation of embryos in the US in the twentieth century. Cryopreservation is a method of preserving biological…
Low temperature engineeringCryonicsScience and civilizationEmbryo transplantationCryotherapy
Interspecies SCNT-derived Humanesque Blastocysts
By: Sarah Taddeo, Jason S. Robert, Nicole Diehnelt
| Published: Jun 23, 2017
Since the 1950s, scientists have developed interspecies blastocysts in laboratory settings, but not until the 1990s did proposals emerge to engineer…
BlastocystDiseasesbioethicsTadpoleCell nuclei--Transplantation
Allan Charles Wilson (1934-1991)
By: Dorothy Haskett
| Published: Jul 24, 2014
Allan C. Wilson studied genes, proteins, and body structures of animals and humans in the US during the second half of the twentieth century. Wilson…
Human EvolutionEvolutionChimpanzeesMitochondriaElectrophoresis
David Starr Jordan (1851-1931)
By: Jill Briggs
| Published: Jun 26, 2013
David Starr Jordan studied fish and promoted eugenics in the US during the late nineteenth and early twentieth centuries. In his work, he embraced…
EugenicsEvolutionEmbryosEmbryologyHeredity
Wilhelm Ludvig Johannsen (1857-1927)
By: B. R. Erick Peirson
| Published: Nov 16, 2012
Wilhelm Ludvig Johannsen studied plants and helped found the field of genetics, contributing methods and concepts to the study of heredity around the…
GeneticsHeredityPhenotypeGenotype-environment interactionEvolution