P-element insertion 1.6kb to the right of coordinate -5.0.
ommatidium (with ast1)
wing vein L2 (with ast1)
wing vein L3 (with ast1)
wing vein L4 (with ast1)
wing vein L5 (with ast1)
Transheterozygotes with ast1 exhibit ommatidia that are very jumbled and often fused. Eyes are less than one-quarter wild type size. Wing vein abnormalities are very pronounced and present in nearly all males and females.
Heterozygotes with S1 are lethal.
Class 3 ast mutation.