Transheterozygotes are male and female sterile, exhibit rough eyes and wing defects (both enhanced at 18oC), brain and meiotic defects, abnormal meiotic spindles and nondisjunction (no motile sperm). Heterozygotes with Df(3R)Hdγ1 are viable but female sterile.
Phenotype assayed in trans with a multiple mutant chromosome carrying mutations of polo, mgr, asp, stg and gnu.