male sterile | recessive
partially lethal - majority die | recessive
visible | recessive
adult thorax
wing
completely recessive Like clv-21. Some flies have no dorsal thorax at all. Viability 30%. Penetrance 50%. The apparently wild-type males are fertile, abnormal ones sterile. RK3.
Allelism with clv-21 not tested.
Bateman, Feb. 1952.