alScer\UAS.cSa; Scer\GAL4ap-md544 flies lack tarsal segment 4.
When expression is driven by Scer\GAL430A mild tarsal segment fusions occur.
Scer\GAL430A, alUAS.cSa has tarsal segment phenotype, enhanceable by Lim1UAS.cTb, Scer\GAL430A
Scer\GAL4ap-md544, alUAS.cSa has tarsal segment 4 phenotype, suppressible | partially by BarUAS.cKa, Scer\GAL4ap-md544
alUAS.cSa, Scer\GAL430A is an enhancer of tarsal segment phenotype of Lim1UAS.cTb, Scer\GAL430A
Loss of tarsal segment 4 in alScer\UAS.cSa; Scer\GAL4ap-md544 flies is partially suppressed by BScer\UAS.cKa.
The combination of Lim1Scer\UAS.cTb and alScer\UAS.cSa driven by Scer\GAL430A causes stronger tarsal fusion than either Lim1Scer\UAS.cTb or alScer\UAS.cSa alone and loss of the joint between tarsal segments 4 and 5.