Date of Award


Degree Type

Bachelors Essay

Degree Name

Bachelor of Science (BS)


Biomedical Sciences

First Advisor

E.S. McDonough

Second Advisor

W.J. Keegan


The eyeless gene of Drosophila, which causes in general a reduction of the size of the eye in the adult fly, does not seem to produce a constant effect. Thus among the offspring of one pair of flies many phenotypes will be found, flies with reduced eyes of various sizes and flies with one or both eyes completely missing. The purpose of this series of experiments was to investigate the genetical and environmental factors involved in the modification of the results produced by the eyeless gene and to determine their relative importance, especially through selective breeding in the direction of a race without eyes and through crossing eyeless flies with the wild type and white eyed type of flies.


A Thesis submitted to the Faculty of the College of Liberal Arts of Marquette University in Partial Fulfillment of the Requirements for the Degree of Bachelor of Science

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