The following information was provided by Zhuhao Wu, Rockefeller University.
PBac{IbaS} (FBtp0070961) was described in Wu et al. 2011 (FBrf0213571) as a duplicated segment of 2R rescuing the haploinsufficiency associated with deletion of the region immediately proximal to Sema2a by Df(2R)A15 and Df(2R)B65.
The haploinsufficient phenotype is dominant male sterility.
PBac{IbaS} was subcloned from BACR06I15 from the RPCI-98 BAC library (http://www.ncbi.nlm.nih.gov/nuccore/16798959). The left end of PBac{IbaS} is located at  2R:16483850  from the sequence:
ccaaatgccagctgaggcatcgcattcgttcccattcgccgcctctgcatctctgtcagccaaaaactgctgcaaaatgatgtgggccgtgccggatcggcttggcttggcttggcttcccagctagccatatgtgtgtatgtgtgtgtgtgtgttgtgggcgttgcgagtgcaacaacttttgttgcatattcagcagcaatggctgcaacatcaacggcaacaacagcaaacagcgatggcgggcgcaatttggttcattcgaaataaacttggcaacgcttatatggccgcattttgtggcaaataaacttgcaactgccagccataaaaactatgtcgatgtcgacaaattatgcaccaagcacgacagcataaagtcctcattctgttgaaatttatcaccgacttgtcagtgggacttttaggcatccgatatcagtacataactgggcccaaaagcccaaatcaatgaggcattctctgcaaattgcgtcagcaagatgcattgccaccaaccagaagattc
The right end is located at  2R:16516130  from the sequence:
gattcgtctgcatacctgccatccatccatccatcctgccgcccgttttgtgtgtgtctgggttggcaaatgtttgcctattgccaaaattgtcgttgtccttgttgtccttgctaaaaatcactttgccgcttccgcacggtgaagtacgaaaattgaataccgccattctgcaacggcattttgtggcaaggagcaaggattatatcgacaaatgaaaatccacgacgctccacgaatattaaacaaagttttgtgtcaacagtttttaccttttcttaagaataatttaagaaatagttaaaatcggcttgaatacgtcaaagaaaatattatattatatattaactaacttaaaaagcaagcgcattgtaaacagacaaaaataagaaagcatatttcaaagttagccaaaataaaatctaaaacttctgatataaagagaaaaagttatgcaaattatatatattttaaatattattttcaaacacgatcaccattgttggtatataccaaaaacccaaacgcgtgactgcgatagtcattcgacttaaacgcgctagcgtttttctcacatctgc