Imprecise excision of the progenitor insertion, resulting in a 1065bp deletion that removes the first exon (including the translation start site) of XNP.
XNP[+]/XNPC1 is a suppressor of partially lethal phenotype of Scer\GAL4elav.PU, Zzzz\CAG127Q.UAS.Tag:HA
XNPC1/+ improves the hatching rate of embryos expressing Zzzz\CAG127Q.Scer\UAS.T:Ivir\HA1 under the control of Scer\GAL4elav.PU and significantly reduces the fraction of deformed embryos.