A maternal effect gene in Drosophila, called torso, is found as a functional allele (torso+) and a nonfunctional, recessive allele (torso−) that prevents the correct development of anterior- and posterior-most structures. A wild-type male (torso+ torso+) is crossed to a female of unknown genotype. This mating produces larvae of which 100% are missing their anterior- and posterior-most structures and therefore die during early development. What are the genotype and the phenotype of the female fly in this cross? What are the genotypes and phenotypes of the female fly’s parents?