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Wilhelm August Oscar Hertwig contributed to embryology through his studies of cells in development and his discovery that only one spermatozoon is…
PeopleFertilizationBiographySpermOvaIn 1942, the United States Supreme Court Case of Skinner v. Oklahoma ruled that states could not legally sterilize those inmates of prisons deemed…
LawCompulsory SterilizationSupreme Court DecisionsEugenicsInvoluntary SterilizationThe 1973 Supreme Court case Roe v. Wade was a significant event in the story of fetal personhood—the story of whether embryos and fetuses are legal…
Fetus--Legal status, laws, etc.--United StatesFetus--Research--Law and legislationEmbryoAbortion--Law and legislation--United StatesAbortion--Law and legislationIn 2015, the British Broadcasting Corporation (BBC) partnered with The Open University to produce the three-part documentary series, Countdown to…
LiteratureConceptionGestationReproductionPhysiologyIn 1987 Rebecca Louise Cann, Mark Stoneking, and Allan Charles Wilson published Mitochondrial DNA and Human Evolution in the journal Nature. The…
LiteratureMitochondriaHuman EvolutionEvolutionHomo sapiensThe Planned Parenthood Committee of Phoenix was established in 1942 to expand Arizona women's access to family planning resources. The Planned…
OrganizationContraceptionDiaphragms, VaginalBirth control clinicsGynecologyWalter Stanborough Sutton studied grasshoppers and connected the phenomena of meiosis, segregation, and independent assortment with the chromosomal…
ChromosomesHeredityBoveri, Theodor, 1862-1915Wilson, Edmund B. (Edmund Beecher), 1856-1939GeneticsOn 10 March 1988, China's first baby conceived through human in vitro fertilization (IVF) and embryo transfer (ET), commonly referred to as a test-…
ReproductionExperimentsFertilityOn the Origin of Mitosing Cells by Lynn Sagan appeared in the March 1967 edition of the Journal of Theoretical Biology. At the time the article was…
LiteratureMitosisEndosymbiosisflagellasymbiosisBetween 1991 and 1994, Christian Peeters and Bert Hölldobler studied the reproductive behaviors of the Indian jumping ant (Harpegnathos saltator), a…
AntsPoneraInsectsWorkers (Insects)Queens (Insects)