bk1 << l(1)1Ac << bb << bk2
Deletion of some of bb.
Right limit of break 1 from inclusion of l(1)1Ac (FBrf0063859) Left limit of break 2 from inclusion of bb (FBrf0063859)
Df(1)y-X2/bb females bb phenotype
Chromosome segregates normally from the Y chromosome during male meiosis.