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Danish botanist and geneticist
- Wilhelm Ludvig Johannsen (born Feb. 3, 1857, Copenhagen, Den.—died Nov. 11, 1927, Copenhagen) 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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Wilhelm Ludvig Johannsen (born Feb. 3, 1857, Copenhagen, Den.—died Nov. 11, 1927, Copenhagen) 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 ...
- The Editors of Encyclopaedia Britannica
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.
Nov 16, 2012 · Wilhelm Ludvig Johannsen (1857-1927) By: B. R. Erick Peirson. Published: 2012-11-16. 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. His experiments on heredity and variation in plants influenced the ...
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.
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.
Johannsen, Wilhelm Ludvig (b. Copen- hagen, Denmark, 3 February 1857; d. Copenhagen, 11 November 1927) biology. Johannsen, one of the founders of the science of genetics, was the son of a Danish army officer, Otto Julius Georg Johannsen, and the former Anna Margrethe Dorothea Ebbesen.
Apr 1, 2014 · Wilhelm Johannsen (1857–1927), a pharmacologist by training, served, without any formal university degree, as assistant in the Chemical Department of the newly founded Carlsberg Laboratorium in Copenhagen. In 1892 he was appointed lecturer and later professor of plant physiology at the Royal Veterinary and Agricultural College of Copenhagen.
