Which developmental outcome results when an insect's imaginal discs fail to receive sufficient ecdysone during molting?

💡 Explanation

When ecdysone signal is insufficient, the appropriate gene expression enabling differentiation of adult structures within the imaginal discs does not fully occur because the hormone-receptor complex cannot effectively bind target genes. Therefore adult structure development is incomplete, rather than larval halt, premature pupation or generalized melanization which are triggered by distinct signaling pathways.

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