Education
Ordained as a priest in 1886, he obtained a Doctor of Philosophy in Natural Science with the highest honors and a scholarship to attend the most prestigious foreign laboratories.
biologist university professor
Ordained as a priest in 1886, he obtained a Doctor of Philosophy in Natural Science with the highest honors and a scholarship to attend the most prestigious foreign laboratories.
In 1896, he became a professor at the Faculty of Sciences for the Catholic University of Leuven, as a chair in microscopy and later in cytology, succeeding Jean-Baptiste Carnoy in the chairman He is the discoverer of the crossing-over of genes during meiosis, which he called "chiasmatypie". He was also president of the Societé Belge de Biologie and a Canon (priest) at the Sint-Baafskathedraal in Ghent.
In 1953, the Catholic University of Leuven founded the "F.A.Janssens Genetics Laboratory", in recognition for the scientific merits of Frans Alfons Janssens.
The laboratory is known as the "Center for Microbial and Plant Genetics". Janssens was the son of politician Theodoor Janssens.