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In eighteenth century Germany, Johann Friedrich Blumenbach studied how individuals within a species vary, and to explain such variations, he proposed…
AnthropologyAnatomy, ComparativeVariation (Biology)EmbryosDevelopmental BiologyIn re Marriage of Witten, decided by the Iowa Supreme Court in 2003, held that neither Tamera nor Arthur (Trip) Witten could use or destroy several…
LawFrozen human embryosFertilization in VitroEmbryosPregnancyCongenital rubella syndrome (CRS) can occur in children whose mothers contracted the rubella virus, sometimes called German measles, during pregnancy…
RubellaRubella in pregnancyRubella virusPregnancyEmbryosIn the late 1980s, Peter Goodfellow in London, UK led a team of researchers who showed that the SRY gene in humans codes a protein that causes testes…
TestisY ChromosomeEmbryosChromosomesSex ChromosomesIn Australia in the 1940s, Norman McAlister Gregg observed a connection between pregnant women who contracted the rubella virus, or German measles,…
LiteratureCataract in childrenRubellaRubella in pregnancyRubella virusIn his 1991 article Screening for Congenital Hypothyroidism, Delbert A. Fisher in the US reported on the implementation and impact of mass neonatal…
LiteratureCongenital HypothyroidismNewborn infants--DevelopmentCretinismInfant Health ServicesThe Sex-determining Region Y (Sry in mammals but SRY in humans) is a gene found on Y chromosomes that leads to the development of male phenotypes,…
Y ChromosomeTestisEmbryosChromosomesSex ChromosomesThe Cell-Theory was written by Thomas Henry Huxley in Britain and published in 1853 by The British and Foreign Medico-Chirurgical Review. The twenty-…
LiteratureEpigeneticsEmbryologyHuxley, Thomas Henry, 1825-1895Cellular control mechanismsPossums 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 historyIn 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 VitroEmbryosPregnancy