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Early 1990s research conducted by Peter Koopman, John Gubbay, Nigel Vivian, Peter Goodfellow, and Robin Lovell-Badge, showed that chromosomally…
Y ChromosomeTestisEmbryosChromosomesSex ChromosomesIn the early twentieth century, scientists and agriculturalists collected plants in greenhouses, botanical gardens, and fields. Seed collection…
ContextGermplasm resources, PlantGermplasm resources, Plant--StorageAgrobiodiversityCropsIn 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 VitroEmbryosPregnancyTeratogens are substances that may produce physical or functional defects in the human embryo or fetus after the pregnant woman is exposed to the…
Abnormalities, HumanFetusPregnancyTeratogenicity testingEmbryosIn eighteenth century Germany, Johann Friedrich Blumenbach studied how individuals within a species vary, and to explain such variations, he proposed…
AnthropologyAnatomy, ComparativeVariation (Biology)EmbryosDevelopmental BiologyStudies in Spermatogenesis is a two volume book written by Nettie Maria Stevens, and published by the Carnegie Institution of Washington in 1905 and…
LiteratureSpermatogenesisGenetic sex determinationSex DifferentiationEmbryosDevelopmental Effects of Endocrine-Disrupting Chemicals in Wildlife and Humans, was published in 1993 in Environmental Health Perspectives. In the…
LiteratureEndocrine disrupting chemicalsEmbryologyfetal developmentendocrine disruptorsIn 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 ChromosomesCongenital rubella syndrome (CRS) can occur in children whose mothers contracted the rubella virus, sometimes called German measles, during pregnancy…
RubellaRubella in pregnancyRubella virusPregnancyEmbryosIn 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 Services