This work investigates the mathematical consequences of inbreeding on the genetic structure of populations and the resulting changes in homozygosity. Sir Ronald A. Fisher, a pioneer in statistics and population genetics, utilizes algebraic models to quantify the effects of various mating systems on gene frequency. The text establishes a rigorous framework for understanding how non-random mating influences the distribution of alleles within a population over successive generations.

Experts recognize this as a foundational text in the development of modern quantitative genetics. Readers frequently note the high level of mathematical density required to follow the author's derivations.