In particular, Dobzhansky provided laboratory evidence for natural selection and variation where previously there had been only field observation. His work with Drosophila, or fruit flies, provided new evidence that supported Darwin’s theory that natural selection, acting on genetic variation in populations, is a driving force in evolution.
Dobzhansky is remembered today not only for his strictly scientific achievements, but also for his deep concern about the possible misunderstanding and misuse by society of the concepts of genetic variation. He is perhaps best remembered for the following statement:
Nothing in biology makes sense except in the light of evolution.
- “Theodosius Dobzhansky“. Encyclopædia Britannica. Encyclopædia Britannica Online. Encyclopædia Britannica Inc., accessed 24 Jan 2012. http://www.britannica.com/EBchecked/topic/167314/Theodosius-Dobzhansky
- Theodosius Dobzhansky, “Nothing in Biology Makes Sense except in the Light of Evolution” The American Biology Teacher, Vol. 35, No. 3 (Mar 1973), pp. 125-129.