The deficiency Df(1)w^rJ1 removes 16 contiguous bands from a region near the left end of the Drosophila X chromosome. Females homozygous for this deficiency die. However, females heterozygous for it and a ClB chromosome are viable and fertile. If such females are mated to males that carry wild-type X and Y chromosomes, what kinds of progeny will appear and in what proportions?