The first chapter of Evolutionary Genetics: Concepts & Case Studies gives a quick sketch of the arc of the field that the book covers via exposition of topical and current issues. Michael R. Dietrich focuses on the series of controversies which serve as "hinges of history." I have addressed the controversy between the biometricians & Mendelians before, below are the "highlights" over a longer period based on the outline constructed by Dietrich in his chapter, From Mendel to molecules: A brief history of evolutionary genetics. 1860sGenesis