W315term | trio-PA; W315term | trio-PC
G to A nucleotide change at the second or third position of the wild type Trp codon leads to a nonsense mutation (exact site of mutation unspecified). The mutation was annotated at the second base of the codon.
photoreceptor cell & axon | somatic clone
The penetrance of the ISNb stall and SNa dorsal branch stop short phenotypes seen in embryos lacking both maternal and zygotic Dab function (derived from Dab1/Dab2 females and having Dab1 as the paternally derived copy of Dab) is increased by trio1/+ to 78% and 80% respectively.