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Wilhelm Johannsen (3 February 1857 – 11 November 1927) was a Danish pharmacist, botanist, plant physiologist, and geneticist. He is best known for coining the terms gene, phenotype and genotype, and for his 1903 "pure line" experiments in genetics.
Mar 15, 2024 · Wilhelm Ludvig Johannsen was a Danish botanist and geneticist whose experiments in plant heredity offered strong support to the mutation theory of the Dutch botanist Hugo de Vries (that changes in heredity come about through sudden, discrete changes of the heredity units in germ cells).
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Apr 22, 2013 · Learn how the Danish botanist Wilhelm Johannsen, a proponent of Mendel's ideas, named the Mendelian units of heredity in 1909. He also made the distinction between the outward appearance of an individual (phenotype) and its genetic traits (genotype).
Nov 16, 2012 · Wilhelm Ludvig Johannsen studied plants and helped found the field of genetics, contributing methods and concepts to the study of heredity around the turn of the twentieth century in Denmark.
Apr 24, 2024 · Danish geneticist who introduced the terms phenotype, genotype, and gene, and was one of the founders of modern genetics. Born in Copenhagen, the son of an army officer, Johannsen was apprenticed to a pharmacist in 1872 and worked in Denmark and Germany, passing his pharmacist's exam in 1879.
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Wilhelm Ludvig Johannsen. 1857-1927. Danish Geneticist and Botanist. W ilhelm Johannsen is considered one of the founders of genetics. His research provided evidence supporting the mutation theory of Hugo de Vries (1848-1935), which holds that there are sudden, spontaneous appearances of new characters or traits in existing species.
Nov 11, 2022 · Wilhelm Johannsen, a Danish botanist and geneticist, died Nov. 11, 1927, at age 70. In 1900, the work of Gregor Mendel was rediscovered, independently, by three researchers, and almost immediately there was interest in merging Darwinian natural selection and Mendelian genetics.
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