Precise deletion of the entire zebra element from the endogenous ftz locus, replacing it with a single AvrII site (CCTAGG). The deletion is 597bp in length, extending from -670 to -74 relative to the transcription start site. The basal promoter, including a GAGA site downstream of the deletion, is intact, as is the neurogenic element upstream of the deletion.
579bp deletion of the entire zebra element from the endogenous ftz locus, replacing it with a single AvrII site (CCTAGG).
CCTAGG