Deletion of the first 305 amino acids of the wild-type protein, removing the amino terminal regulatory domain. Expression is driven by an Hsp70 promoter.
Heat induced expression in wild-type embryos during early embryogenesis (prior to the onset of gastrulation) gives rise to first instar larvae that show partial deletion of several abdominal and thoracic segments.
Hsap\RAF1Δ305.hs, torrv66 has abdomen phenotype
Heat induced expression in torrv66 embryos deletes the middle body segments, 5-20% embryos also show terminal structures.