Øjvind Winge was a titan of 20th-century genetics whose work bridged the gap between the microscopic study of cells (cytology) and the observable patterns of inheritance (genetics). Often referred to as the "Father of Yeast Genetics," Winge’s influence extends from the fundamental understanding of how species evolve to the practical science behind the beer we drink.
1. Biography: From Botany to the Carlsberg Laboratory
Øjvind Winge was born on May 19, 1886, in Aarhus, Denmark. He displayed an early aptitude for natural history, enrolling at the University of Copenhagen to study botany. His academic lineage was prestigious; he studied under the legendary plant ecologist Eugenius Warming and later became an assistant to Wilhelm Johannsen, the man who coined the terms "gene," "genotype," and "phenotype."
Winge earned his Magister Scientiarum in 1910 and his doctorate in 1917. His early career was spent at the Royal Veterinary and Agricultural University in Copenhagen, where he was appointed Professor of Genetics in 1921. However, his most defining professional move occurred in 1933, when he was named Director of the Physiology Department at the Carlsberg Laboratory. He held this position until his retirement in 1956, transforming the laboratory into a global epicenter for genetic research. Winge passed away on April 5, 1964, leaving behind a legacy that fundamentally altered the biological sciences.
2. Major Contributions: Polyploidy and the Birth of Yeast Genetics
Winge’s intellectual contributions can be categorized into three revolutionary pillars:
The Theory of Allopolyploidy (1917)
In his doctoral thesis, Winge solved a major puzzle in evolutionary biology: how do new plant species arise suddenly? He proposed that when two different species hybridize, the resulting offspring might be sterile because their chromosomes cannot pair properly. However, if the chromosome number spontaneously doubles (polyploidy), the plant gains a matching set of chromosomes, restoring fertility and creating a new species instantly. This theory of "speciation via hybridization" remains a cornerstone of plant evolution.
Sex Determination in Fish
Using the guppy (Lebistes reticulatus), Winge conducted pioneering research on sex-linked inheritance. He was the first to demonstrate that certain traits are carried exclusively on the Y-chromosome (holandric inheritance) and that sex determination could be influenced by multiple factors, including "crossing over" between X and Y chromosomes.
The Discovery of the Yeast Life Cycle (1935)
Winge’s most enduring contribution was proving that yeast (Saccharomyces) followed Mendelian laws of inheritance. Before Winge, yeast was thought to reproduce only asexually or through an unpredictable process. In 1935, Winge and his assistant, Catherine Roberts, demonstrated that yeast undergoes an "alternation of generations"—shifting between a haploid state (one set of chromosomes) and a diploid state (two sets). By developing techniques to isolate single yeast spores, he proved that yeast could be cross-bred just like peas or fruit flies.
3. Notable Publications
Winge was a prolific writer, publishing over 150 papers. His most influential works include:
- The Chromosomes: Their Numbers and General Importance (1917): His seminal doctoral thesis outlining the theory of polyploidy.
- One-sided Masculine Inheritance in Lebistes reticulatus (1922): A foundational paper for the study of sex-linked genetics.
- On the Haplophase and the Diplophase in the Genus Saccharomyces (1935): The paper that launched the field of yeast genetics.
- Inheritance in Dogs, with Special Reference to Hunting Breeds (1950): A book that applied genetic principles to animal breeding, reflecting his personal interests.
4. Awards and Recognition
Winge’s contributions earned him international acclaim and membership in the world's most prestigious scientific societies:
- Member of the Royal Danish Academy of Sciences and Letters (1927).
- Foreign Member of the Royal Society of London (1947).
- The Darwin-Wallace Medal (1958): Awarded by the Linnean Society of London to mark the 100th anniversary of Darwin's Origin of Species.
- Honorary Doctorates: Received honorary degrees from several institutions, including the University of Göttingen and the University of Oslo.
5. Impact and Legacy
Winge’s legacy is visible in both the laboratory and the industry. By establishing yeast as a "model organism," he paved the way for modern molecular biology. Because yeast cells are eukaryotes (like humans) but grow as quickly as bacteria, they are now used to study cancer, aging, and gene expression.
In the industrial realm, Winge’s work at the Carlsberg Laboratory revolutionized brewing. His methods allowed brewers to create stable, genetically defined yeast strains, ensuring consistency in flavor and production. Every time a scientist uses yeast to produce insulin or a brewer selects a specific strain for an IPA, they are standing on the shoulders of Øjvind Winge.
6. Collaborations and Mentorship
Winge was a central figure in the "Copenhagen School" of genetics.
- Wilhelm Johannsen: Winge began as an assistant to this pioneer, inheriting a rigorous approach to experimental design.
- Catherine Roberts: An American microbiologist who moved to Denmark to work with Winge. Their 20-year collaboration was essential in refining the techniques of yeast hybridization.
- E. Laustsen: A skilled technician who helped Winge develop the "Winge-Laustsen micromanipulator," a tool used to pick up and move individual microscopic yeast spores.
7. Lesser-Known Facts
- The Hunting Scientist: Winge was an obsessive hunter and outdoorsman. His interest in the genetics of dogs wasn't just academic; he wanted to understand the inheritance of "pointing" and "retrieving" behaviors to breed better hunting companions.
- The "Winge-Effect" in Speciation: In some circles, the sudden creation of a species through chromosome doubling is still colloquially referred to as a "Winge-type" speciation event.
- A Skeptic of Early Molecular Biology: Despite his forward-thinking work, Winge was initially skeptical of the "one gene, one enzyme" hypothesis proposed by Beadle and Tatum, demanding rigorous proof before accepting the emerging biochemical definitions of the gene. This skepticism ensured that the work coming out of the Carlsberg Laboratory met the highest possible standards of evidence.