Contained within a 10kb genomic SpeI-BamHI fragment, which includes the entire Top1 transcribed region and 1.3kb of upstream and 0.5kb of downstream sequences.
Position of rescue fragment on reference sequence inferred by FlyBase curator
Top1+t10/Top1JS is a non-suppressor of bang sensitive | recessive phenotype of eas2
Rescues the lethality of Top177.