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Biologist William Keith Brooks studied embryological development in invertebrates and used his results as evidence for theories of evolution and…
BiographyEducationPhysician and pathologist Elizabeth Maplesden Ramsey was a member of the Carnegie Institution of Washington (CIW) for thirty-nine years. The…
PeopleBiographyPrimatesIn 1934 a fourteen-day-old embryo was discovered during a postmortem examination and became famous for being the youngest known human embryo specimen…
ReproductionSpecimensHuman DevelopmentMultiple theories about what determines sex were tested at the turn of the twentieth century. By experimenting on germ cells, cytologist Nettie Maria…
PeopleHeredityReproductionBiography