TheodosiusDobzhansky was born on January 25, 1900, in the town of Nemirov, Russia.
By age twelve, Dobzhansky already knew what he wanted to be and later told people that "there was no question that I wanted to become a biologist" and he planned to study nature science in the University of Kiev.
Dobzhansky's studies in population genetics served as a basis for his explanation of how the evolution of races and species could have come about through adaptation.
Theodosius Grigorevich Dobzhansky (Russian — Феодосий Григорьевич Добржанский; sometimes anglicized to Theodore Dobzhansky; January 25, 1900 - December 18, 1975) was a noted geneticist and evolutionary biologist.
Dobzhansky was born in Ukraine (then part of Imperial Russia) and emigrated to the United States in 1927.
Dobzhansky emigrated to the United States in 1927 on a scholarship from International Education Board of the Rockefeller Foundation arriving in New York on December 27.