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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 syndromeIn a dispute over the allocation of cryopreserved preembryos, the Supreme Court of Washington resolved the case of David J. Litowitz v. Becky M.…
LawFrozen human embryosFertilization in VitroEmbryosPregnancyCurt Jacob Stern studied radiation and chromosomes in humans and fruit flies in the United States during the twentieth century. He researched the…
ChromosomesHeredityMitosisDrosophilaDrosophila melanogasterThe Mother's Health Clinic opened in Phoenix, Arizona, in 1937 and provided women in central Arizona with contraception and family planning resources…
OrganizationSanger, Margaret, 1879-1966ContraceptionArizonaDiaphragms, VaginalEarly 1990s research conducted by Peter Koopman, John Gubbay, Nigel Vivian, Peter Goodfellow, and Robin Lovell-Badge, showed that chromosomally…
Y ChromosomeTestisEmbryosChromosomesSex ChromosomesCarl Gottfried Hartman researched the reproductive physiology of opossums and rhesus monkeys. He was the first to extensively study the embryology…
PeopleReproductionBiographyOpossumsmonkeysBisphenol A (BPA) is an organic compound that was first synthesized by Aleksandr Dianin, a Russian chemist from St. Petersburg, in 1891. The chemical…
bisphenol AReproductionHormonesHuman DevelopmentTelomerase is an enzyme that regulates the lengths of telomeres in the cells of many organisms, and in humans it begins to function int the early…
TelomeraseTelomereDNAMolecular BiologySomatic embryogenesisIn 2002 Eric Davidson and his research team published 'A Genomic Regulatory Network for Development' in Science. The authors present the first…
LiteratureGene regulatory networksSystems BiologyGenetic regulationGenesOn 9 July 1990, in Moore v. Regents of the University of California, the Supreme Court of California ruled in a four-to-three decision that…
LawMedical laws and legislationLegal MedicineRight of propertyRight of property--United States--History