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Johann Gregor Mendel studied plants and their patterns of inheritance in Austria during the nineteenth century. Mendel experimented with the pea…
GeneticsMendel's lawPeasBotany, ExperimentalBotanyWilhelm 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 interactionEvolutionNational Geographic's documentary In the Womb: Identical Twins focuses on the prenatal development of human identical twins. Director Lorne Townend…
LiteratureTwinsDocumentary filmsTestosteroneMethylationCystic fibrosis (CF) is a fatal, inherited disease found in humans and characterized by buildup of thick, sticky mucus, particularly in the…
Cystic FibrosisGeneticsDiseasesLap-Chee Tsui is a geneticist who discovered the cystic fibrosis (CF) gene, and his research team sequenced human chromosome 7. As the location of…
PeopleTsui, Lap-CheeCystic FibrosisReproductionBiographyThe French flag model represents how embryonic cells receive and respond to genetic information and subsequently differentiate into patterns. Created…
ModelsGeneticsSir Francis Galton was a British science writer and amateur researcher of the late nineteenth century. He contributed greatly to the fields of…
PeopleGalton, Francis, 1822-1911GeneticsReproductionBiographyJohn D. Gearhart is a renowned American developmental geneticist best known for leading the Johns Hopkins University research team that first…
PeopleStem CellsGeneticsBiographyHomeobox genes are a cluster of regulatory genes that are spatially and temporally expressed during early embryological development. They are…
Homeobox genesGenes, HomeoboxGenetics