Hermann Joseph Muller
Hermann Joseph Muller was an American geneticist who was awarded the 1946 Nobel Prize in Physiology or Medicine, "for the discovery that mutations can be induced by X-rays". Muller warned of long-term dangers of radioactive fallout from nuclear war and nuclear testing, which resulted in greater public scrutiny of these practices.
21 December 1890
Born on the same birth day (21 December): Barry Gordon • Benjamin Schmolck • Corey Collymore • Dave Kingman • Edward Schreyer • Gustave Kahn • Joseph Carruthers • Karrie Webb • Leopold von Ranke • Lillebjørn Nilsen • Luke Brooks • Michael Tilson Thomas • Paloma Herrera • Seichō Matsumoto • Tom Sturridge • U. R. Ananthamurthy • Y. S. Jagan Mohan Reddy
Born in the same month (December 1890): Adolfo Ruiz Cortines • Carlos Gardel • Edwin Howard Armstrong • Jaroslav Heyrovský • Laura Salverson • Mark Tobey • Noel Odell • Percy Hodge • Prince Joachim of Prussia • Rudolf Schlichter • Yvonne Arnaud