Imprecise excision of the EP(3)0859 P-element, deleting 1666 nucleotides, including the first 2 coding exons of tefu. Position of mutation on reference sequence inferred by FlyBase curator.
Most tefuΔ11 homozygous flies (Df(3R)Hsc70-4Δ11 homozygotes in which the lack of Hsc70-4 function has been rescued by Hsc70-4+t14) show pupal lethality, although 12% eclose and are viable. These adult escapers do not survive for very long after eclosion. Escaper females lay a very small number of eggs that do not hatch.