The moern evolutionary synthesis is a union of ideas from several biological specialties which forms a sound account of evolution. This synthesis has been generally accepted by most working biologists. The synthesis was produced over about a decade (1936–1947), and the development of population genetics (1918–1932) was the stimulus. This showed that Mendelian genetics was consistent with natural selection and gradual evolution. The synthesis is still, to a large extent, the current paradigm in evolutionary biology.