Figure 1.

D-mef2 mutant oogenic phenotypes. (1) The genotypes of the fly strains tested are described in Materials and Methods. The genotype of the “+” chromosome is cn, bw, sp to approximate the other mutant chromosomes. Phenotypes are described in more detail in the text. (2) Reduced da, dorsal appendages are fused and narrowed at the base. (3) Broad da, dorsal appendages do not narrow but the space between the two separate appendages are filled in. (4) Abnormal da, the dorsal appendages are separate but the shape and/or length are abnormal; these eggs are usually shortened as well. In enlarged views of the egg chambers (not shown), the number of follicle cells encompassed by the appendages can be counted and are summarized below: wild type, 14 cells; reduced da, 9 cells; broad da, 14 and 18 cells (in the short and normal body samples, respectively); abnormal da, 14 cells; cup-like, no da.