Homozygotes have a vgnp wing phenotype, missing halteres and intermediate postscutellars. vg83c/vg83b27 transheterozygotes have wild-type wings, halteres and postscutellars.
homozygous wing phenotype like that of vgnp halteres absent postscutellar bristles present (more or less) homozygous viable female-fertile?
Induced in a mature sperm in a wild-type male.
"irradiation" was stated as tentative. "spontaneous" was stated as tentative.