Fig. 2. All deficiencies screened for dominant interaction with tai. The Bloomington Stock Center deficiency kit was screened for dominant genetic interaction with tai, indicated by the boxes below each chromosome arm (thick black lines). The identity of the chromosome arms are indicated on the left. The size of the box corresponds to the cytological breakpoints for the deficiency, indicated by the numbers below the chromosome arms. White boxes represent deficiencies that were tested but had no interaction with tai. Black boxes represent deficiencies that interacted with tai (Table 1). The gray box represents the deficiency that removes the tai locus at the 30A6 region.