Ronald A. Fisher was a British statistician and geneticist, born on February 17, 1890. He is best known for his pioneering work in the field of statistics, particularly for developing methods such as analysis of variance (ANOVA) and maximum likelihood estimation. Fisher's contributions laid the foundation for modern statistical science and experimental design. In addition to his statistical work, Fisher made significant contributions to the field of population genetics. He introduced the concept of the Fisherian runaway, which explains how certain traits can evolve through sexual selection. Fisher's influence extends to various disciplines, including biology, agriculture, and social sciences.