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← Nature & AnimalsWhich developmental outcome results when juvenile hormone analogue abnormally activates imaginal disc cells during larval molting?
A)Adult structures with larval characteristics✓
B)Premature pupation inhibiting limb growth
C)Complete absence of metamorphosis events
D)Enhanced overall adult size and vigor
💡 Explanation
When juvenile hormone analogue abnormally activates imaginal disc cells, prolonged expression of 'larval' genes occurs via sustained receptor signaling because this disrupts the precise timing and sequence of regulatory signals preparing for metamorphosis, leading to mixed characteristics . Therefore adult structures exhibit larval characteristics, rather than pupal arrest, blocked metamorphosis, or increased size needing different mechanistic failure responses.
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