Imprecise excision of the P{lacW} element in Hel89B89B, removing the P{lacW} element and 2.9kb of genomic sequence.
visible | recessive
abdominal sternite 6 | male
Hel89B89B/Hel89B10 males have one to four small bristles on the sixth abdominal sternite.
Hel89B89B