Contains a 2.2kb BamHI-EcoRI fragment and a 4.3kb EcoRI-EcoRI fragment from the Dp gene, resulting in a Dp minigene which lacks most of the large first intron.
The two major defects seen in females carrying homozygous Dpa2 or Dp49Fk-1 germline clones (loss of dorsal-ventral polarity in the egg and a failure to correctly form a 16-cell cyst) are significantly rescued by Dp+mMa.