Lethal in transheterozygous combination with MadP1.
MadD3 dominantly enhances the tkv6 phenotype; tkv6 homozygotes have a normal notum and legs, but the presence of one copy of MadD3 results in defects in the notum and legs. Double heterozygotes with Df(2L)tkv2, dpps5, shn1, Med4 or put135 may show imaginal disc development defects. No interaction with sax5 is seen in double heterozygous flies.