Homozygotes have a vg wing phenotype. Postscutellars and halteres are missing. vg81l18/vg83b27 transheterozygotes have wild-type wings, halteres and postscutellars.
homozygous wing phenotype like that of vg halteres absent postscutellar bristles absent homozygous viable female-fertile?
Induced in a mature sperm in a wild-type male.
"irradiation" was stated as tentative. "spontaneous" was stated as tentative.