 Mendel’s refined methodology was the basis for important conceptual innovations. Next to the shift from “forms” or “types” found in several generations in hybridization experiments to the distribution of characters, Mendel could move from the characterization of the contribution of gametes (also addressed as “factors”) to the “elements” by which the gametes differed (Müller-Wille &amp; Orel 2007). Nonetheless, Mendel did not think of the regularities as laws of heredity. Indeed, whether they were valid for organisms other than the garden pea he considered subject to empirical investigation. Furthermore, Mendel thought of his results as illuminating the behavior of characters in hybrids, i.e., he did not generalize his results to heredity per se, as it would occur in the reproduction of all characters, also in pure varieties (Rheinberger &amp; Müller-Wille 2018: Ch. 3).