Homozygotes have a vgnw wing phenotype. Postscutellars and halteres are missing. vg83f-XD/vg83b27 transheterozygous females have vgnw wings, missing halteres and wild-type postscutellars.
homozygous wing phenotype like that of vgnw halteres absent postscutellar bristles absent homozygous viable female-fertile?
Induced in a mature sperm.