Which developmental outcome arises when imaginal discs in a fruit fly larva misinterpret positional information?

💡 Explanation

When imaginal discs misinterpret positional information, pattern formation genes are incorrectly activated because signalling pathways controlling anterior-posterior and dorsal-ventral axes are disrupted, leading to segmentation defects. Therefore duplicated or missing segments occur, rather than premature inhibition, delayed molting, or increased metabolic rate, which involve different endocrine or metabolic controls.

• Which aerodynamic effect commonly results if a bird's flight feathers become heavily soiled or oiled?
• Which consequence results when an insect larva's imaginal discs prematurely activate due to ectopic hormone release?
• Which risk increases when foraging honeybees rely exclusively on outdated floral maps?
• Which metabolic shift governs brown bear arterial constriction during hibernation?
• Which photosynthetic constraint increases when photorespiration rate rises proportionally to oxygen concentration?
• Which navigational risk increases when an echolocating bat experiences dense fog?