Gregor Mendel

Gregor Mendel was an Austrian Catholic friar and scientist whose 1856–1863 pea-plant hybridization experiments at the Augustinian St. Thomas's Abbey in Brünn, Austrian Empire (modern Brno, Czech Republic) — published in 1866 as the paper "Versuche über Pflanzen-Hybriden" ("Experiments on Plant Hybridization") — produced the foundational documents of modern Western genetics, though the work was overlooked until its 1900 rediscovery. He was born Johann Mendel on July 20, 1822, in Heinzendorf bei Odrau, Austrian Empire (modern Hynčice, Czech Republic), into an Austrian-Silesian peasant farming family. His father Anton Mendel was a tenant farmer and his mother Rosine Schwirtlich was a homemaker.

His education at the University of Olomouc Faculty of Philosophy (1840–1843) was curtailed by his family's farming-poverty financial constraints. His 1843 entry into the Augustinian St. Thomas's Abbey in Brünn — which he entered partly to receive the educational opportunities that he could not afford as a layperson — produced his religious name Gregor and launched his subsequent scientific career. His subsequent 1851–1853 University of Vienna scientific studies in physics, chemistry, mathematics, zoology, and botany produced the scientific training that would shape his pea-plant experiments.

His 1856–1863 pea-plant hybridization experiments at the St. Thomas's Abbey monastery garden — across approximately 28,000 individual pea plants of seven distinct trait pairs (round vs. wrinkled seeds; yellow vs. green seed color; purple vs. white flower color; smooth vs. constricted seed pods; green vs. yellow seed pods; axial vs. terminal flower position; tall vs. short plant height) — produced his 1865 first scientific presentation at the Brünn Natural History Society and his subsequent 1866 publication of the paper "Versuche über Pflanzen-Hybriden."

The 1866 paper established the foundational laws of modern genetics — particularly the law of segregation (each parent contributes one of two alleles for each trait), the law of independent assortment (separate traits are inherited independently), and the law of dominance (some alleles are dominant over others). The paper was overlooked until its 1900 rediscovery by three independent European botanists — Hugo de Vries (Netherlands), Carl Correns (Germany), and Erich von Tschermak (Austria) — who launched the 20th-century Western genetics scientific discipline. He died on January 6, 1884, at age 61, in Brünn, of chronic kidney inflammation.

His name Gregor derives from the German form of Gregory (from the Greek Grēgórios meaning "watchful"). Gregor has been a rare but enduring boys' name across German and Eastern-European-tradition American naming.