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← Nature & AnimalsWhich outcome occurs when ecdysone pulses are absent during Drosophila pupation?
A)Impaired imaginal disc differentiation✓
B)Accelerated larval molting stages
C)Suppressed juvenile hormone production
D)Enhanced developmental timing precision
💡 Explanation
Ecdysone initiates pupation, promoting imaginal disc development via cell signaling; without it, **apoptosis inhibition** fails. Therefore, disc structures imperfectly differentiate, rather than accelerate molting stages because this hormone triggers and sustains the changes.
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