Which disruption impairs wing development when imaginal discs fail to express the apterous gene?

💡 Explanation

When apterous isn't expressed, dorsoventral boundary formation fails because it regulates fringe expression, leading to non-localized Notch activation which specifies dorsal fate. Therefore disrupted dorsoventral signaling results, rather than asymmetric vein patterning, cessation of compartment boundary formation, or axis misalignment, which are governed by independent genetic pathways.

• Which disruption occurs when ocean fish excessively drink seawater?
• Which physiological response occurs as ambient temperature increases and core body temperature approaches upper threshold in desert mammals?
• Which outcome results where anglerfish lures emit light?
• Which consequence results when excessive hive drone activity distorts bee communication?
• Which constraint complicates efficient C4 photosynthesis in prolonged drought?
• Which consequence results when aggressive mimicry fails in cleaner wrasse?