FLP-mediated recombination between the progenitor insertions PBac{WH}csw^f02923 and P{XP}ph-p^d01798 has resulted in a deletion of the sequence between them. The deletion removes all of the ph-d coding region and most of the ph-p coding region (only exon 1, which encodes 12 amino acid residues, remains).

The non-autonomous overgrowth phenotype caused by Df(1)ph^del clones in the eye is suppressed if the clones are also mutant for Df(1)upd^d1-3.

Hemizygous males die as embryos, soon after the initiation of germ band retraction.

Homozygous clones in the eye result in a non-autonomous overgrowth phenotype. The cells within the mutant clone show autonomous apoptosis and defective differentiation in the eye disc.

The non-autonomous overgrowth phenotype caused by Df(1)ph^del clones in the eye is not suppressed if the clones are also mutant for upd1^unspecified.

The non-autonomous overgrowth phenotype caused by Df(1)ph^del clones in the eye is suppressed if the clones are also mutant for N^unspecified, but the autonomous apoptosis and defective differentiation seen in Df(1)ph^del clones in the eye disc is not suppressed in the double mutant clones.