Wilhelm Johannsen (3 February 1857 – 11 November 1927) was a Danish pharmacist, botanist, plant physiologist, and geneticist. He is best known for coining...

as caddisfly larva cases and beaver dams as "extended phenotypes". Wilhelm Johannsen proposed the genotype–phenotype distinction in 1911 to make clear...

amateur economist Oskar Augustus Johannsen (1870–1961), American entomologist, specialist of Diptera Wilhelm Johannsen (1857–1927), Danish botanist, plant...

same genotype. The term genotype was coined by the Danish botanist Wilhelm Johannsen in 1903. Any given gene will usually cause an observable change in...

argued that selection on such characteristics would be ineffective. Wilhelm Johannsen's "pure line" experiments on Phaseolus vulgaris beans appeared to refute...

introduced by Danish botanist, plant physiologist, and geneticist Wilhelm Johannsen in 1909. It is inspired by the ancient Greek: γόνος, gonos, that means...

their evolution. The terms "genotype" and "phenotype" were created by Wilhelm Johannsen in 1911, although the meaning of the terms and the significance of...

was hotly contested by some famous geneticists: William Bateson, Wilhelm Johannsen, Richard Goldschmidt and T.H. Morgan, all of a rather dogmatic turn...

biologist studying chromosomes in 1900s. Later, Danish researcher Wilhelm Johannsen called the sites of heredity on chromosomes "genes." Thomas Morgan...

Patrick Herbert Bellew in 1936. They divorced and she married Max Wilhelm Johannsen in 1946. Arthur George Marcus Douglas de la Poer Beresford (1915-1992)...