Fig. 1
From: Molecular evolution of gustatory receptors in the Anopheles gambiae complex

Heat map of direction of selection (DoS) between (A) the three major vector species vs. An. quadriannulatus and (B)Â An. coluzzii and An. gambiae s.s vs. An. arabiensis. Positive values (consistent with positive selection) are red, while negative values (consistent with purifying selection) are blue and neutral values are yellow. Grs where NI could not be computed because of a lack of fixed non-synonymous differences are represented in grey