l(2)36Bd << bk1 << BicD << rdo << bk2 << kel
Distal DNA breakpoints given (Steward, McNally, and Schedl, 1984, Nature 311: 262-65)
Df(2L)TW119/Df(2L)TW201 flies show male sterility, deafness and reduced ocelli. Mature sperm are formed in the males, but are amotile. The two cyst cells surrounding the mature 64-unit sperm bundle fail to be degraded and the spermatids that constitute the bundle are not individualised.