Which developmental risk increases in insect pupae when ecdysone levels transiently decline below an inductive imaginal threshold?

💡 Explanation

When environmental stress reduces resources causing ecdysone levels to fall below the imaginal threshold, homeotic genes controlling segment identity are poorly expressed because these transitions require sufficient hormone levels. Therefore, loss of segment identity results, rather than accelerated cuticle synthesis, premature eclosion, or prothoracic blockage, which involve different hormonal control mechanisms.

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