Which developmental abnormality occurs when imaginal disc cells experience ectopic activation of homeotic genes?

💡 Explanation

When homeotic genes are ectopically activated in imaginal discs, positional information is disrupted because these genes specify segment identity, causing cells to adopt the fate of another segment, leading to a limb replacement. Therefore, antennal structures replace limbs rather than accelerated molting needing hormonal control, blocked apoptosis disturbing cell death, or reduced ommatidia numbers resulting from separate signalling pathway disruptions.

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