Homozygous clones in the wing produce discrete, round blisters of variable size. These blisters can be located anywhere on the wing. Wing venation is normal.
Shows a weak genetic interaction with mys8; the frequency of wing blisters is increased from approximately 10% in mys8 single hemizygotes to approximately 20% in mys8 hemizygotes that are also heterozygous for blo2R-17. Shows no interaction with mysb9.