| The frizzled pathway has been shown to be a key regulator of planar polarity for hairs on the wing, ommatidia in the eye, and sensory bristles on the notum. |
| B expression is activated by Wg in the scutum whereas B represses Wg expression in the most anterior part of the notum. |
| The notum is well-developed, but it is impossible to tell if the eyes are large or meet medially. |
| These mutant pupae have defects including shortened or bent legs, bristle defects, a split notum, and wing abnormalities. |
| Mutant clones in the notum anlagen of the wing imaginal disc produce alterations in the pattern of medial thoracic bristles and a strong dorsal thoracic cleft. |
| The final chapter gives the conditions required for a per se notum proposition. |
