Round 14: Tossup 6
The expression of “glue proteins” needed for this process is promoted by the Broad-Complex gene. Removal of the corpus allatum prematurely accelerates this process, during which polytene chromosomes “puffing” is observed. This process requires the binding of the retinoid X receptor homolog Ultraspiracle protein to a hormone secreted by the prothoracic gland. Imaginal discs form during the third instar stage in this process’s holometabolous or “complete” form. Benzoylureas (“ben-zoil-ureas”) slow down this process’s cuticle induction phase by blocking the synthesis of chitin (“KITE-in”). Ecdysone (“ECK-duh-sone”) and juvenile hormone titer waves precede this process, which forms exuviae after a round of molting. For 10 points, name this developmental process by which a larva transforms into a pupa, then into an adult insect. ■END■