Answer:
Charles Darwin is the creator of the evolution theory, which states that organisms evolve by survival of the fittest. This theory is central in biology and enables to understand how species are formed and biodiversity generated
Steven Jay Gould was a paleontologist that developed the theory of the punctuated equilibrium, which indicated that evolution is characterized by long periods of stability periods followed by the sudden emergence of new species
Ernst Mayr was an evolutionary biologist who developed the biological species concept, which is critical to understand the mechanisms of speciation
Ronald Fisher is considered to be the founder of population genetics. His work was critical to understand the association between Mendel's Laws and Darwin's theory