Imprecise excision of the progenitor insertion, resulting in a deletion spanning from 47 nucleotides downstream of the Kdm4A ATG codon to 12 nucleotides downstream of the ATG codon of the 3' flanking gene Or43b.
Deletion resulting from the imprecise excsion of P{GawB}Kdm4ANP0618, which extends from 47 bp downstream of the ATG of Kdm4A to 12 bp downstream of the ATG of Or43b.