The Drosophila gap gene giant regulates ecdysone production through specification of the PTTH-producing neurons.

Abstract excerpt

In Drosophila melanogaster, hypomorphic mutations in the gap gene giant (gt) have long been known to affect ecdysone titers resulting in developmental delay and the production of large (giant) larvae, pupae and adults. However, the mechanism by which gt regulates ecdysone production has remained elusive. Here we show that hypomorphic gt mutations lead to ecdysone deficiency and developmental delay by affecting...

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