Fig. 9. Genetic interaction between ss, Dll, dan and danr. (A) Basal capsule of spineless^114.4 heterozygous arista shows a mild defect (compare with Fig. 7D). (B) spineless^114.4/danr^ex35 double heterozygote. (C) spineless^114.4/dan danr^ex56 double heterozygote. Note the two-segmented appearance and bracted bristles. (D) Dll^SA1/+ heterozygote. The basal capsule appears nearly normal. (E) Dll^SA1/+ danr^ex35/+ double heterozygote. (F) Dll^SA1/+ dan danr^ex56/+ double heterozygote. Stout ectopic bristles were formed on the basal capsule. (G) spineless^114.4 dan danr^ex56/dan danr^ex56 antenna. Note the more extensive transformation of arista to tarsus.

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