Early life and education
In the history of botany, Wilhelm Ludwig Johannsen occupies the ground between patient observation and the larger claims it makes possible.
Wilhelm Ludwig Johannsen was born at Copenhagen in 1857. His recorded nationality is Denmark. He was educated at University of Copenhagen.
Professional career
The nineteenth century professionalised science. Laboratories acquired budgets, universities acquired chairs, and for the first time a person could be a scientist by occupation rather than by inclination.
He held appointments at University of Copenhagen, where the work centred on genetics.
Scientific contributions
The work that carried his reputation furthest concerned coining the terms gene, phenotype and genotype. Botany is where description becomes science: naming a plant correctly is the first step to knowing what it can do.
Working from Denmark shaped what was possible. Access to instruments, collections, journals and colleagues has always been geographic, and the history of science is partly a history of that inequality.
Awards and recognition
His work was formally recognised with the Knight of the Order of the Dannebrog, Honorary doctor of the University of Groningen and commander of the Order of the Dannebrog.
Legacy and death
Read now, the significance is less in any single result than in the fact that the results held. Botany is cumulative, and a contribution counts if the next generation could stand on it.
Wilhelm Ludwig Johannsen died in 1927 at the age of 70. The work outlived the debates that surrounded it, which is the only durable form of scientific success.
Achievements
- Held posts at University of Copenhagen
- Educated at University of Copenhagen
- Fields of research: genetics
