The Edwards brothers, Fisher, and Hogben

The brothers John H. and A.W.F. Edwards, and their respective mentors Lancelot Hogben and Ronald Fisher, were scientists in the 20th century. The two senior researchers developed opposing theories on the genotype-environment interaction (called G × E); the elder brother, John, came to be known as "Hogben's Edwards", and A.W.F. as "Fisher's Edwards".