Distal deficiency breakpoint breaks within exon 4.
Studies of excision and repair events of P{hswa} in mus308D2/mus308Sz29 or mus308D5/mus308Sz29 males indicate that DNA repair synthesis during synthesis-dependent strand annealing (SDSA) is unaffected in the mutants but that the mutants are defective in end-joining repair of DNA double-strand breaks.
Studies of excision and repair events of P{hswa} in mus308ZIII-2003/mus308Sz29 or mus308ZIII-3294/mus308Sz29 males indicate that they are specifically defective in end-joining repair of DNA double-strand breaks.