Nothing in biology makes sense except in the light of evolution. This statement is an apt motto for the lifework of Theodosius Dobzhansky, whom Stephen Jay Gould has called "the greatest evolutionary geneticist of our times." Between 1937 and 1975, the year of his death, Dobzhansky and twenty-two of his collaborators published forty-three papers in a series called "The Genetics of Natural Populations." Taken as a whole, the series is perhaps the...