The Genetical Theory of Natural Selection (Ronald Fisher)

The Genetical Theory of Natural Selection, developed by Ronald Fisher, combines genetics with Darwin's concept of natural selection. It explains how genetic variations in a population arise through mutations and recombination. Those individuals with advantageous traits are more likely to survive and reproduce, passing these traits to future generations. Fisher introduced mathematical models to quantify these processes, showing how traits can evolve over time through natural selection. This theory laid the foundation for modern evolutionary biology, highlighting the role of genes in the adaptation and survival of species within their environments.