The fruit fly is an aristocrat; He breeds not here nor there, For he's as cautious of his seed As a thoroughbred racing mare...
"Comprehensive Report on the Genetics of Drosopila Melanogaster, Or the Strange Case of the Philosophical Fruit Fly,"
Sketch: Vol. 10
, Article 3.
Available at: http://lib.dr.iastate.edu/sketch/vol10/iss4/3