IIa precursor is transformed into a IIb precursor.
Homozygotes have more sensory neurons than normal.
Overproduction of sensory neurons. Defects in the embryonic PNS, number of es and cho neurons is approximately doubled due to transformation of the outer support cell and cap cell respectively. Mosaic analysis demonstrates loss of ttk function in the adult leads to the appearance of supernumerary neurons at the expense of hair and socket cells.
Scer\GAL4nanos.PG, runUAS.cLa, ttk[+]/ttkosn has lethal phenotype
ttkosn has sensory neuron | increased number phenotype, non-enhanceable by phyl1/phyl2
ttkosn has external sensory organ precursor cell IIb | increased number phenotype, non-suppressible by msi1/msi1
ttkosn has external sensory organ precursor cell IIa phenotype, non-suppressible by msi1/msi1
ttkosn has sensory neuron | increased number phenotype, non-suppressible by phyl1/phyl2
ttk[+]/ttkosn is a suppressor of trichogen cell | increased number phenotype of msi1
ttk[+]/ttkosn is a suppressor of eo neuron | embryonic stage phenotype of phyl1/phyl2
ttkosn is a suppressor of ommatidium phenotype of msi1, sina3/sina2
ttkosn is a suppressor of rhabdomere phenotype of msi1, sina3/sina2
msi1, sina3/sina2, ttkosn has ommatidium phenotype
msi1, sina3/sina2, ttkosn has rhabdomere phenotype
The partial lethality due to runScer\UAS.cLa; Scer\GAL4nos.PG (3% viable) is not suppressed by maternal heterozygosity for ttkosn.