Knock-in allele generated by phiC31-mediated integration at a founder knockout line containing a phiC31\attP site (crbGX24w-). The C-terminal residues ERLI of crb are deleted.
No mitotic segregation defects are seen in crbΔPBM mutant embryos.
Clones of homozygous crbΔPBM cells have no significant effect on wing size.