FLP-mediated recombination between the two progenitor insertions (PBac{WH}E2f1f05222 and P{XP}E2f1d01508) has deleted the intervening genomic sequence, removing the exon that encodes the 5'UTR of the E2f1 RA, RD and RE isoforms; the deletion extends from 35bp upstream to 2857bp downstream of the RA/RE isoform transcription start site. A hybrid residual element remains at the site of the deletion.
FLP-mediated recombination between the two progenitor insertions has deleted sequence extending from 35bp upstream to 2857bp downstream of the exon that encodes the 5'UTR of the E2f1 RA, RD and RE isoforms. A hybrid residual element that contains 645bp of P{XP}E2f1d01508) and 1342bp of PBac{WH}E2f1f05222 remains at the site of the deletion.
