Polytene chromosomes normal.
Hemizygous males exhibit a reduction in the size of four ganglion within the optic lobe, the medulla is facing anteriorly and the division of the lobula and lobula plate is not seen.
Larval/pupal lethal with no escapers at 22oC.
embryonic lethal.
ogre1 is rescued by ogre+t12.5
Mutant phenotype can be rescued by the introduction of a wild type ogre gene by P element mediated transformation: wild type optic lobe structure is restored. Homozygous lethal phenotype can be rescued by ogre+t12.5 and wild type optic lobe structure is restored in hemizygous males.
Niklas.
Maternal germline clonal analysis demonstrates cell lethality in homozygous clones.