Insertion in the 5' untranslated region, at position +71 from the predicted start of transcription.
endos[+]/endosEY01105 is a suppressor | maternal effect | partially of female semi-sterile | dominant phenotype of gwlscant, polo[+]/polo1
endos[+]/endosEY01105 is a suppressor | partially of female semi-sterile | dominant phenotype of polo[+]/polo11, twsaar-1
endosEY01105, polo[+]/polo1 has female fertile phenotype
endosEY01105, polo[+]/polo11 has female fertile phenotype
endosEY01105, gwl[+]/gwlscant has female fertile phenotype
polo1/+ gwlscant/+ double heterozygous females are nearly sterile. This phenotype is partially suppressed if the females are also heterozygous for either endosEY01105.
Males homozygous for the endosEY01105 chromosome are sterile, but this sterility has not been mapped, and so may be due to a second-site mutation.