Imprecise excision of the P{lacW}barrk14014 insertion resulting in a deletion of the promoter and start of the open reading frame of both lok and barr genes.
lethal | recessive
barrE51 is rescued by barr+tXa
barr+tXa rescues the lethality of Df(2L)E51 animals, indicating that the lethality of this chromosome is due to barrE51 (and not lokE51).