Fig. 9. Genetic interaction between ss, Dll, dan and danr. (A)
Basal capsule of spineless114.4 heterozygous arista shows
a mild defect (compare with Fig.
7D). (B) spineless114.4/danrex35
double heterozygote. (C) spineless114.4/dan
danrex56 double heterozygote. Note the two-segmented
appearance and bracted bristles. (D) DllSA1/+
heterozygote. The basal capsule appears nearly normal. (E)
DllSA1/+ danrex35/+ double heterozygote. (F)
DllSA1/+ dan danrex56/+ double heterozygote.
Stout ectopic bristles were formed on the basal capsule. (G)
spineless114.4 dan danrex56/dan
danrex56 antenna. Note the more extensive transformation of
arista to tarsus.