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Haeckel believed that the development of an embryo revealed the adult stages of the organism’s ancestors. Haeckel represented this idea with drawings…
TextbooksEmbryosEmbryonic DevelopmentEmbryo DevelopmentPublicationsIn the twentieth and early twenty-first centuries, Gail Roberta Martin specialized in biochemistry and embryology, more specifically cellular…
EmbryosEmbryos--PhysiologyEmbryos--AnatomyBlastocystRetrovirus InfectionsIn 1974, Elizabeth Dexter Hay and Stephen Meier in the US conducted an experiment that demonstrated that the extracellular matrix, the mesh-like…
Extracellular matrixCollagenCorneaEpitheliumEmbryosIn 1893, Julia Barlow Platt published her research on the origins of cartilage in the developing head of the common mudpuppy (Necturus maculosus)…
CartilageEmbryosGastrulationEmbryologyNecturusKarl Oskar Illmensee studied the cloning and reproduction of fruit flies, mice, and humans in the US and Europe during the twentieth and twenty-first…
CloningMolecular CloningClone CellsTwinsEmbryosThe hedgehog signaling pathway is a mechanism that directs the development of embryonic cells in animals, from invertebrates to vertebrates. The…
EmbryologyEmbryosWieschaus, Eric F.Cellular signal transductionDrosophila melanogasterCharles Robert Cantor helped sequence the human genome, and he developed methods to non-invasively determine the genes in human fetuses. Cantor…
Human Genome ProjectDNAfetal developmentFetusEmbryosIn 2006, Kazutoshi Takahashi and Shinya Yamanaka reprogrammed mice fibroblast cells, which can produce only other fibroblast cells, to become…
Stem cells--ResearchStem CellsNobel PrizesEmbryologyDevelopmental BiologyThe Y-chromosome is one of a pair of chromosomes that determine the genetic sex of individuals in mammals, some insects, and some plants. In the…
Y ChromosomeSex ChromosomesEmbryosDNAChromosomesIn 1978, James Kitching discovered two dinosaur embryos in a road-cut talus at Roodraai (Red Bend) in Golden Gate Highlands National Park, South…
ContextDinosaursDinosaurs--EggsMassospondylus carinatusMassospondylus