The Genetical Theory of Natural Selection adalah sebuah buku karya Ronald Fisher yang memadukan genetik Mendelian dengan teori seleksi alamCharles Darwin.[1] Fisher menjadi orang pertama yang berpendapat bahwa "Mendelisme bahkan memvalidasi Darwinisme"[2]
^The Structure of Evolutionary Theory (2002) by Stephen Jay Gould, Chapter 7, section "Synthesis as Restriction" Gould quotes Fisher “The whole group of theories which ascribe to hypothetical physiological mechanisms, controlling the occurrence of mutations, a power of directing the course of evolution, must be set aside, once the blending theory of inheritance is abandoned. The sole surviving theory is that of Natural Selection” The Genetical Theory of Natural Selection (1930, p. 20)