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← Nature & AnimalsWhich outcome occurs when mutations disrupt the function of imaginal disc homeobox genes in Drosophila?
A)Loss of specific adult structures✓
B)Increased larval growth rate
C)Development of hybrid larval-pupal forms
D)Accelerated overall metamorphosis speed
💡 Explanation
When mutations disrupt imaginal disc homeobox genes (Hox genes), improper body segment specification occurs because these genes control the spatial organization and identity of adult structures during metamorphosis, leading to specific omissions. Therefore, loss of specific adult structures results, rather than altered growth, hybrid forms, or change to metamorphosis speed, which involve distinct regulatory pathways.
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