Filter my results
In 1912, Henry Herbert Goddard published The Kallikak Family: A Study in the Heredity of Feeble-Mindedness, hereafter The Kallikak Family, in which…
LiteratureIntellectual DisabilityMental DeficiencyEugenicsEugenics--United States--HistoryHenry Herbert Goddard was a psychologist who conducted research on intelligence and mental deficiency at the Vineland Training School for Feeble-…
Intellectual DisabilityMental DeficiencyEugenicsEugenics--United States--HistoryHeredityThe endothelium is the layer of cells lining the blood vessels in animals. It weighs more than one kilogram in adult humans, and it covers a surface…
EndotheliumTissuesEpitheliumCellsVascular endotheliumMuriel Wheldale Onslow studied flowers in England with genetic and biochemical techniques in the early twentieth century. Working with geneticist…
PeopleHeredityBiochemistryEpistasis (Genetics)GeneticsDuring the mid-nineteenth century, Johann Gregor Mendel experimented with pea plants to develop a theory of inheritance. In 1843, while a monk in the…
GeneticsPeasLegumesPhenotypePlant breedingWilhelm Johannsen in Denmark first proposed the distinction between genotype and phenotype in the study of heredity in 1909. This distinction is…
Johannsen, W. (Wilhelm), 1857-1927Genotype-environment interactionPhenotypeHeredityGeneticsWilhelm Ludvig Johannsen studied plants and helped found the field of genetics, contributing methods and concepts to the study of heredity around the…
GeneticsHeredityPhenotypeGenotype-environment interactionEvolution