Vulval patterning in Caenorhabditis elegans is controlled by both Ras-mediated 'inductive' signaling and LIN-12/Notch-mediated 'lateral' signaling. Recent studies have identified the lateral signal as well as various genes that are targets of the lateral signaling pathway, and begun to define the multiple molecular links connecting Ras and Notch.
Sundaram, M. V. (2004, April 20). Vulval development: The battle between Ras and notch. Current Biology. Cell Press. https://doi.org/10.1016/j.cub.2004.03.052