what is the rule of hormones in metamorphosis
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Both molting and metamorphosis are controlled by hormones. ... This hormone acts upon the prothoracic gland, an endocrine gland in the prothorax, which in turn secretes the molting hormone, a steroid known as ecdysone. Molting hormone then acts on the epidermis, stimulating growth and cuticle formation.
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Explanation:
Insect molting and metamorphosis are controlled by two effector hormones: the steroid 20-hydroxyecdysone and the lipid juvenile hormone (JH) (Figure 18.21). 20-hydroxyecdysone initiates and coordinates each molt and regulates the changes in gene expression that occur during metamorphosis.
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