Drosophila flies have both X and Y chromosomes, as well as Sex is instead determined by the ratio of X chromosomes to.
Q Rev Biol. Jun;65(2) Sex determination in Drosophila melanogaster. Slee R(1), Bownes M. Author information: (1)Department of Molecular.
In Drosophila, sex determination is achieved by a balance of female determinants on to autosomes in different sexual phenotypes in Drosophila melanogaster.