ttk1/ttk1 flies are viable and develop with no aberrant muscle development.
ttk1 mutant eyes have supernumerary R7 cells in some ommatidia, though the eyes are overtly the same as wild type by SEM. The number and appearance of cone cells in each ommatidium of ttk1 pupal eye discs are normal.
Eggs laid by ttktwp/ttk1 or homozygous ttk1 mothers exhibit a weak dorsal appendage phenotype, with 12% show some defect. Only 40% of eggs laid by ttk1/ttk1e11 mothers are wild-type,, the rest exhibit a dorsal appendage phenotype, 3% having only the nub of an appendage.
Shows a semidominant double bristle phenotype - similar to that caused by overexpression of the TTK69 isoform.
CNS development is normal.
Rough eye phenotype due to supernumerary R7 cells. Mutant phenotype can be enhanced by ttk00219.
The compound eye of ttkbose1/ttk1 flies is similar to wild-type.
Many ommatidia contain supernumerary R7 cells and decreased numbers of R1-R6 cells.
embryonic lethal no effect on ftz gene expression.