Johannsen, Wilhelm

Johannsen, Wilhelm

(1857–1927) Danish botanist who, in the early 1900s, carried out selection experiments with beans (Phaseolus vulgaris) which showed that selection is a passive process that eliminates, but does not produce, variations. Johannsen is, however, chiefly remembered for having coined the terms GENE, GENOTYPE and PHENOTYPE.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005