Gene Ontology annotations of 1) omnipresent and 2) all human genes. The left side shows the Gene Ontology annotations for all 2,185 human genes in omnipresent lineages. The right side shows the Gene Ontology annotations for all 31,718 human genes, used as a reference set. Lines are placed between equal annotations for easy comparisons between the left and the right side. a.) 6th level GO Biological Processes. b.) 6th level GO Molecular Functions. c.) 6th level GO Cellular Components.