Which consequence results when an insect pupa's prothoracicotropic hormone (PTTH) cycle malfunctions?

💡 Explanation

Insects require timely pulses of PTTH to activate ecdysone (molting hormone) by the prothoracic gland; this leads to metamorphosis. An interruption impacts the imaginal discs’ final differentiation; therefore, pupae will present deformities that are larval remains, rather than complete transition.

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