A thickening of the epidermis of an insect larva, which, on pupation, develops into a particular organ of the adult insect.
- Because the dorsal body wall develops from the wing imaginal disc, data on thoracic body wall patterning are available in Drosophila.
- Why are imaginal discs present in some insects and not in others?
- The imaginal discs now develop into rudimentary adult appendages like wings, legs, and antennae.
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