The P{lacW} element is inserted 126 nucleotides 5' to the first non-coding exon of the 105kDa Doa coding transcript and 1662 nucleotides 5' to its initiating AUG.
In DoaHD/Doas2784 mutants where the DoaHD allele is from the mother blackened areas are seen on the wings. When the Doas2784 allele comes from the mother the mutants die at or prior to the pupal stage.
Precise excision of the P{lacW} element produces flies that are viable in combination with either DoaHD or Doa3B.