Contained within a 4.6kb genomic BamHI fragment.
wild-type
Zw10+t4.6 rescues Zw104
Zw10+t4.6 rescues Zw1017
Zw10+t4.6 rescues Zw1016
Three alleles of mit(1)15, mit(1)1516, mit(1)1517 and mit(1)154 can be rescued: low viability, sterility, eye morphology and mitotic (cytological) phenotypes are complemented by mit(1)15+t4.6.