Figure 5From: The plant Polycomb repressive complex 1 (PRC1) existed in the ancestor of seed plants and has a complex duplication history Presence/absence of PRC1 components in the plant kingdom. The red-shaded area represents the core PRC1 subunits. Bmi1 orthologs in chlorophytes have lost the RAWUL domain (half-circle). Monilophytes might have EMF1 orthologs but sequenced genomes are necessary to confirm this.Back to article page