Regarding the Tm1delC deletion, this is the sequence on the 5’side of the break point: AACAGAGGCAGCAGAAACAATTGTTCAAAAGTGATAAGG (break) This is the sequence on the 3’side of the break point: (break)ATGAGGGGGCCAGTAATCCGGCAGCAGCTTTAATAG This is the sequence that is missing in the null: CGAAGGAGAAGTCCAGCAGGCAGCAGAGAAAGCGAGCCGGCACCAGGAGCACTCGCAATCCGAGGACGCAATCGGAATCTTCGGGCCTGTCATCCCGTTGGTGTTCCATCGAAGAGCAGTTGAACCTGCTGGACGACCTGCTCTACTACTGCGATGAGGAGGCCGAACTGTATCTAGCCCAGCTGTACGAAAGGTTCGAGACACTCCGGCGTAGCAGGAGTTCCTCGCCAGTGAGCGATTTCTGGAGCGATTCCGACATGGAGCACGATGACTCCAGCACCAGTGGCACTGGCAGCCATACAGCCAGCAATACCAGTCTAGTTCCCGCCTCGCTGAAGCGTCGTGGCCACCAGCATCATCCGCGATTCTCGGGCACTCGCCGTCCCAATGTGCCCAATGTCCAGGAGATTCTGGCCGCACTCTATCGTGGCGACTCAAAGAGCGCCCTGTCCAATCTGAGAGGAGAGACGCAACCGGAGGAGGAGCAACCACAGCAGCAGACGGAGGAGGTGCTGCCACCCAGCAGAAGCACTTTAAGCCTGCCCCTCAGTGAATCGGTGACCAATTCCCTGGGCAGCAACAGTCCCACGCCCACAGACGAAAGCAGCGTGCAAG The cell line used was S2 (not D-mel2) from Invitrogen/Life technologies.