Homozygous clones induced in the follicle cells result in defects in border cell migration; the border cells fail to initiate migration and remain at or near the anterior tip of the egg chamber even in stage 10.
l(2)17E117E1, par-127C1 has border follicle cell phenotype
l(2)27C127C1 l(2)17E117E1 double transheterozygotes have border cell migration defects in more than 50% of egg chambers.
Selected as: a mutation that causes defects in border cell migration when homozygous clones are induced in the follicle cells.