One of the founders of the modern synthesis of evolutionary theory, Theodosius Dobzhansky provided laboratory evidence for natural selection and variation as the major forces driving evolution. In this essay from American Biology Teacher, March 1973, Dobzhansky shows how evolution is the cornerstone which supports and unifies the many fields within biology. He writes of biology: "without that light [of evolution] it becomes a pile of sundry facts some of them interesting or curious but making no meaningful picture as a whole." |
