Figure 4From: The plant Polycomb repressive complex 1 (PRC1) existed in the ancestor of seed plants and has a complex duplication history Schematic gene tree of VRN1. Red squares show gene duplications. Lineage-specific expansions are not depicted, with the exception of Brassicaceae. OG1-3 are the three orthologous groups as described in the main text. A. thaliana genes are denoted in blue letters.Back to article page