Polytene chromosomes normal.
The testes of homozygous males appear nearly normal, although they are somewhat shorter than wild type. Coiled sperm bundles are seen in the basal region of the testes but no motile sperm are formed.
Induced with: ms(3)HO5A1. Induced with: fs(3)HO5A1. Induced with: fs(3)HO5B1.