Insertion in an intron of cpo, 38bp upstream of the transcription start site (insertion site is between nucleotides 12297 and 12298 of scaffold AE003720, release 3).
Insertion of 10kb P{lacZ} at position 0 of cpo walk.
Insertion of P element at cytological position 90D, into an intron of cpo.
Fails to complement cpo1 and cpo2.
Allelic series of cpo alleles: cpolΔcp11 > cpol1 = cpol2 = cpol3 = cpol4 = cpol5 = cpol6 = cpoj4A1 = cpol8 > cpol9 > cpolΔcp12 > cpo1 = cpo2.