Excision of the P{EP} element. There is a 12.5kb deletion removing all of the coding sequence for the par-1 kinase domain as well as most of the linker region. In addition, there is a small deletion adjacent to the remaining P-element sequence in the first intron (this small deletion is within both the mei-W68 and par-1 transcription units as mei-W68 shares a promoter and 5' UTR with the N1 class of par-1 transcripts).

mei-W68¹