In the fly Drosophila, the allele for dumpy wings (d) is recessive to the normal longwing allele, (D) and the allele for white eye (w) is recessive to the normal red-eye allele (W). In a cross of DDWW with Ddww, what proportion of the offspring are expected to be “normal” (long wings and red eyes)? What proportion are expected to have dumpy wings and white eyes?
