Fig. 2From: On the consistency of orthology relationshipsExample of the species graph H G,s derived from (G,s) after an application of Reduction Rule 1. The edge AC is due to non-edge a 1 c 1; edge BD is due to non-edges b 1 d 1 and b 2 d 2. As H G,s is not connected, we can apply Branching Rule 1Back to article page