Polytene chromosomes normal.
Heterozygotes with T(Y;2)A162, T(Y;3)H135, T(Y;3)H138, T(Y;2)H149, T(Y;2)J165, T(Y;2)P8, T(Y;2)P51, T(Y;2)R93, T(Y;2)B24, T(Y;3)D221, T(Y;3)G45, T(Y;3)G130, T(Y;2)J163, T(Y;3)R78 or T(Y;3)R119 are sterile, heterozygotes with T(Y;2)A77 or T(1;Y)V8 are fertile.