Colorium is an autosomal dominant trait in nutonian flies (identical to earth fruit flies in every way). there are two alleles at this locus: f = dominant allele; flies with this allele cannot observe the color fuschia; these flies have the colorium phenotype. + = wild type allele; flies who are homozygous for this allele can observe the color fuschia; these flies do not have the colorium phenotype. a cross of a true breeding male with colorium and a true breeding female without colorium produces f1 offspring that all have the colorium phenotype. when a complementation cross is performed (with true breeding flies), we expect the following results: