Genomic fragment that encompasses hd (contains 575bp of sequence from upstream of the transcription start site). The coding sequence has been tagged at the C-terminal end with EGFP.
hdEGFP rescues eggshell synthesis and delays the nuclear cleavage arrest in embryos from transheterozygous hd1/Df(3R)3-4 females. Mitotic defects become apparent during embryonic cycles 8/9.