Fig. 8From: Distinct functions of two olfactory marker protein genes derived from teleost-specific whole genome duplicationModel of OMP evolution. Ancestral OMP was expressed in all Gαolf2-expressing OSNs and possibly eyes (retina). OMP1 and 2 emerged after the 3R. Because of subfunctionalization, OMP1 is now expressed in the deep layer of the OE, whereas OMP2 is in the superficial layer of the OE and retinaBack to article page