The proteins Scalloped and Vestigial are known from genetic studies to play a part in Drosophila wing development. Recent results show how they interact with each other, and in combination with other transcription factors, to confer specific patterns of expression within the wing.
Bray, S. (1999, April 8). Drosophila development: Scalloped and vestigial take wing. Current Biology. Current Biology Ltd. https://doi.org/10.1016/S0960-9822(99)80154-7