P{EP} insertion in the second intron.
mitosis & nuclear chromosome
Heterozygotes show the formation of "granular" chromatin during interphase and mitosis and high proportions of cells (which are arrested at the G2/M boundary) have hypercondensed chromatin. Cells with abnormal chromosome segregation are also seen. Heterozygous females have egg chambers with an abnormal number of trophocytes and defects in chromatin condensation.