Fig. 3. Adult Ice¹ show multiple defects suggestive of defects in developmental cell death. (A-E) SEM images of arista of different genotypes. (A) Wild type, (B) Ice¹, (C) th¹, (D) th¹, Ice¹ and (E) dcp-1^Prev1/+; Ice¹. (F) Ventral view of the abdomen of a wild-type male, The genitalia (G) and analia (A) are marked. (G) Similar view of the abdomen of a Ice¹ adult. Genitalia are markedly rotated. (H) Dorsal view of the abdomen of a wild-type adult male. (I) Similar view of the abdomen of a Ice¹ adult male, showing a pale line that runs along the dorsal abdominal midline. Animals homozygous for Ice¹ lack zygotic but not maternal Ice.