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Altering the temporal regulation of one transcription factor drives evolutionary trade-offs between head sensory organs

Ramaekers, Ariane ; Claeys, Annelies ; Kapun, Martin ; Mouchel-Vielh, Emmanuèle ; Potier, Delphine ; Weinberger, Simon ; Grillenzoni, Nicola ; Dardalhon-Cuménal, Delphine ; Yan, Jiekun ; Wolf, Reinhard ; Flatt, Thomas ; Buchner, Erich ; Hassan, Bassem A.

In: Developmental Cell, 2019, vol. 50, no. 6, p. 780-792.e7

Size trade-offs of visual versus olfactory organs is a pervasive feature of animal evolution. This could result from genetic or functional constraints. We demonstrate that head sensory organ size trade-offs in Drosophila are genetically encoded and arise through differential subdivision of the head primordium into visual versus non- visual fields. We discover that changes in the temporal...