Table 1.

Gross abnormalities displayed by myb mutants raised at permissive temperature

Structure or process	Phenotypic defect
Wing	Reduced number of hairs; hair and bristle orientation disturbed
Abdomen	Missing bristles and hairs; hair and bristle orientation disturbed; patches of undifferentiated cuticle
Flight	myb1 flight ability impaired; myb2 flight ability unaffected
Oogenesis	Viability of embryos derived from mutant females greatly reduced when oogenesis occurs at restrictive temperature