ftz << bk1 << Scr << rn << bk2 << Est-C
Breakpoint(s) molecularly mapped
Heterozygotes are male fertile.
Hemizygous males are fertile but with reduced fecundity, the total testis tubulin pool is approximately half that of wild type. Spermatid nuclei are normally shaped but many spermatids are not properly aligned at the tip of the developing bundle.