Personal communication from: Ulrich Schaefer, Herbert Jackle, Yuchun He, Hugo Bellen, Todd Laverty and Gerry Rubin To: Bloomington Drosophila Stock Center Dated: 29 March 1999 Background: The lethal alleles and P{lacW} insertions reported here were generated in the laboratory of Herbert Jackle (Goettingen) in a screen for lethal P{lacW} hops into the X chromosome. In situ hybridizations to map the P{lacW} insertions were carried out in the laboratory of Hugo Bellen (Houston). Hybridized chromosomes were read by both the Bellen lab and by Todd Laverty (Rubin lab, Berkeley). With the exception of ActnG0077, the assumption that lethality in single insertion lines is caused by the insertion has not been verified. lacZ expression patterns for these lines will be available from FlyView. Information communicated: Alleles (presumed to be caused by P{lacW} insertion) -- 'ActnG0077','2C1-2' 'l(1)G0007G0007','12E3-4' 'l(1)G0009G0009','5C5-8' 'l(1)G0018G0018','2B1-4' 'l(1)G0023G0023','3A1-4' 'l(1)G0028G0028','11B3-6' 'l(1)G0030G0030','5D3-6' 'l(1)G0035G0035','6F1-2' 'l(1)G0037G0037','1B7-8' 'l(1)G0039G0039','7E5-6' 'l(1)G0040G0040','8B1-4' 'l(1)G0043G0043','6F1-2' 'l(1)G0045G0045','5A5-6' 'l(1)G0050G0050','5D' 'l(1)G0051G0051','2B7-1' 'l(1)G0052G0052','1A3-5' 'l(1)G0054G0054','3F4-5' 'l(1)G0055G0055','3B1-2' 'l(1)G0056G0056','9E3-4' 'l(1)G0057G0057','13F1-2' 'l(1)G0058G0058','1C1-2' 'l(1)G0059G0059','6E4-5' 'l(1)G0061G0061','9E3-4' 'l(1)G0063G0063','5E1-2' 'l(1)G0066G0066','2C1-2' 'l(1)G0067G0067','8E3-4' 'l(1)G0071G0071','7E5-6' 'l(1)G0072G0072','9C3-4' 'l(1)G0074G0074','16D1-2' 'l(1)G0075G0075','9D' 'l(1)G0078G0078','? -- multi-insert line: 11D1-2, 17C1-4' 'l(1)G0079G0079','5C3-6' 'l(1)G0081G0081','4B1-2' 'l(1)G0083G0083','9F1-6' 'l(1)G0084G0084','18D5-8' 'l(1)G0095G0095','7F1-4' 'l(1)G0104G0104','12D' 'l(1)G0105G0105','1E3-4' 'l(1)G0108G0108','16C1-2' 'l(1)G0113G0113','? -- multi-insert line: 3F1-2, 7D1-2, 11A1-2' 'l(1)G0115G0115','1C2-3' 'l(1)G0117G0117','? -- multi-insert line: 5C1-2, 5D1-2' 'l(1)G0118G0118','6E1-2' 'l(1)G0119G0119','? -- multi-insert line: 8F4-5, 9A1-2' 'l(1)G0127G0127','9E1-2' 'l(1)G0129G0129','2B1-4' 'l(1)G0130G0130','2B1-2' 'l(1)G0132G0132','1D' 'l(1)G0136G0136','13E8-9' 'l(1)G0142G0142','1B' 'l(1)G0155G0155','7C' 'l(1)G0170G0170','2D1-1' 'l(1)G0178G0178','7F' Transposon insertions (from multi-insert lines) 'P{lacW}G0078a','11D1-2' 'P{lacW}G0078b','17C1-4' 'P{lacW}G0113a','3F1-2' 'P{lacW}G0113b','7D1-2' 'P{lacW}G0113c','11A1-2' 'P{lacW}G0117a','5C1-2' 'P{lacW}G0117b','5D1-2' 'P{lacW}G0119a','8F4-5' 'P{lacW}G0119b','9A1-2'