Subject: T(2;3)SM6b-TM6B The following information was provided by Robert Kreber, University of Wisconsin at Madison (7/04). T(2;3)SM6b-TM6B is a gamma ray-induced translocation between SM6b (FBba0000040) and TM6B, Tb1 (FBba0000197) balancers. The translocation breakpoints are in polytene chromosome divisions 34 and 84. In addition to the markers usually present on the progenitor chromosomes (including Cy1, amosRoi-1, AntpHu and Tb1), T(2;3)SM6b-TM6B carries a strong allele of ap.