Around 1923 the soon-to-be famous Soviet mathematician and probabilist Sergei N. Bernstein started to construct an axiomatic foundation of a theory of heredity. He began from the premise of stationarity (constancy of type proportions) from the first generation of offspring. https://www.spidertattooz.com/China-Glaze-Beaches-Toes-0-5-oz-84652-p12283/