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The Notch signaling pathway is a mechanism in animals by which adjacent cells communicate with each other, conveying spatial information and genetic…
EmbryologyDevelopmental BiologyEmbryosCell differentiationNotch genesEmbryogenesis is an intricate process that can easily be disrupted by means of teratogenic agents. Some of these agents target the embryonic period's…
ThalidomideHuman DevelopmentFetusThree-dimensional anatomical models have long been essential to the learning of science and lend a sense of "control" to those practicing in the…
TechnologyReproductionModelsAnatomyAlthough best known for his work with the fruit fly, for which he earned a Nobel Prize and the title "The Father of Genetics," Thomas Hunt Morgan's…
PeopleMorgan, Thomas Hunt, 1866-1945Genetics, ExperimentalNobel Prize winnersDrosophila melanogasterA test-tube baby is the product of a successful human reproduction that results from methods beyond sexual intercourse between a man and a woman and…
Artificial InseminationInsemination, ArtificialethicsReproductionFertilizationGeorge McDonald Church studied DNA from living and from extinct species in the US during the twentieth and twenty-first centuries. Church helped to…
DNA SequenceNucleotide sequenceGenesGenomesGeneticsSheldon Clark Reed helped establish the profession of genetic counseling in the US during the twentieth century. In 1947 Reed coined the term genetic…
Genetic CounselingCystic FibrosisDrosophilaGeneticsHmong AmericansFrom its founding in 1910 until it closed its doors in 1939, the Eugenics Record Office (ERO) at Cold Spring Harbor Laboratory in New York was the…
OrganizationEugenicsOrganizationsReproductionReproductive RightsRobert Alan Good was an American physician and scientific researcher who explored the cellular mechanisms of immunity. His research and discoveries…
PeopleBiographyImmunologyAll sexually reproducing, multicellular diploid eukaryotes begin life as embryos. Understanding the stages of embryonic development is vital to…
EukaryotaEukaryotesOntogeny