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In insects, development and metamorphosis are tightly regulated by hormones, which coordinate growth, molting, and the transition from one life stage to another. Among the key hormones involved are Juvenile Hormone (JH), Prothoracicotropic Hormone (PTTH), and ecdysone. These hormones interact in a precise sequence to ensure that insect development proceeds correctly, from larval stages through pupation to adult emergence. Juvenile Hormone, produced by the corpora allata, plays a critical role in maintaining larval characteristics during development. High levels of JH during molting ensure that the insect molts into another larval ___ ________ ________ ________ ______ ______.
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