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← Nature & AnimalsWhich outcome prevents complete metamorphosis during pupal ecdysis?
A)Inadequate ecdysone receptor activation✓
B)Excessive juvenile hormone secretion
C)Premature cuticle melanization onset
D)Accelerated prothoracic gland apoptosis
💡 Explanation
Disrupted ecdysone receptor activation leads to failed pupal-to-adult transition because it governs molting and differentiation. The mechanism involves nuclear receptor signaling; therefore, the insect remains partially pupal rather than achieving full metamorphosis.
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