Deletion of approximately 100kb associated with recombination in a small region surrounding the deletion (in position 2R:19279000-19454000 of the release 5 genome).
Lethal in combination with Df(2R)bw-HB132 or Df(2R)bw5.
Homozygous lethal.
Df(2R)bw-W3a and Df(2R)bw-W3b originate from a single parental female, but from different vials. Evidence suggests that they are likely to have independent mutational origins, even if they have exactly the same lesion.