Johannsen, Wilhelm Ludwig


(1857–1927) Danish biologist, theoretician and experimentalist, who clarified the basis of classical genetics and its relation to evolution by introducing the concepts of gene, genotype and phenotype.

Keywords: gene; genotype; phenotype; evolution; heredity

Further Reading

Brierley WB (1928) Obituary notice. Professor W. Johannsen. The Annals of Applied Biology 15: 699–703.

Churchill FB (1974) William Johannsen and the genotype concept. Journal of the History of Biology 7: 5–30.

Dunn LC (1973) Johannsen, Wilhelm Ludwig. Dictionary of Scientific Biographies 7: 113–115.

Johannsen WL (1911) The genotype conception of heredity. American Naturalist 45: 129–159.

Roll‐Hansen N (1978) The genotype theory of Wilhelm Johannsen and its relation to plant breeding and the study of evolution. Centaurus 22: 201–235.

Roll‐Hansen N (1989) The crucial experiment of Wilhelm Johannsen. Biology and Philosophy 4: 303–329.

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How to Cite close
Roll‐Hansen, Nils(Sep 2005) Johannsen, Wilhelm Ludwig. In: eLS. John Wiley & Sons Ltd, Chichester. [doi: 10.1038/npg.els.0002539]