Mutants show male sterility, with highly elongated, immobile, blebbed sperm tails and abnormal nuclear morphology. DAPI staining indicates nuclear breakdown or chromosomal loss during sperm maturation.
Elongated spermatid nuclei are dispersed.
A. Spradling.
Associated with: CG17230tho-1. It is not yet known whether the "tho1" mutant phenotype is due to an effect on CG17230.