The FRT cassette has been excised, juxtaposing the αTub84B promoter and Mmus\Hoxa2 coding sequences.
Adults in which all cells express Mmus\Hoxa2αTub84B.PP are viable.
Mmus\Hoxa2αTub84B.PP, pb27/pb20 has visible phenotype
Mmus\Hoxa2αTub84B.PP, pb20 has visible | recessive phenotype
Mmus\Hoxa2αTub84B.PP, pb27 has visible | recessive phenotype
Mmus\Hoxa2αTub84B.PP, pb27/pb20 has proboscis phenotype
Mmus\Hoxa2αTub84B.PP, pb20 has proboscis phenotype
Mmus\Hoxa2αTub84B.PP, pb27 has proboscis phenotype
pb27/pb20 flies have reduced maxillary palps and a proboscis to tarsus transformation. The reduced maxillary palp phenotype is not rescued by expression of Mmus\Hoxa2αTub84B.PP and the proboscis to tarsus transformation is replaced with a partial transformation of proboscis to arista in these flies.