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Fig. 8. zeste is not required for repression of homeotic genes in imaginal disks. Wing imaginal disks from z homozygotes (left) or z, pho double homozygotes (right) stained with antibody against Ubx protein. No misexpression is detected in z mutant disks and z, pho double mutants do not show more misexpression (asterisk) than do pho homozygotes alone (compare with Fig. 3A).