Insertion of a 1.15kb P{KP} element in the distal promoter region downstream of the distal TATA box and 5 nucleotides upstream of the transcription start site. A duplicated sequence, GTCCAAGT, at both ends of insertion is the target site in Adh between nucleotides -13 and -6. The element is inserted 5' to 3' in the same orientation as Adh transcription. In addition, there is a G to A change at +586 in the first intron. There is an A at nucleotide position 1490 (characteristic of fast electrophoretic alleles).