Heterozygous males have a reduced number of sex comb teeth on the first leg. Heterozygous males have no ectopic sex comb teeth on the third legs. They have an average of 0.02 ectopic sex comb teeth per second leg. Scr9/Scr4 ; Dp(3;Y)77ab males have an average of 0.002 ectopic sex comb teeth per second leg and have no ectopic sex comb teeth on the third legs.
Thoracic segment 1 is transformed to thoracic segment 2 and labial is transformed to maxillary.
Abbott.