Skip to main content
. 2005 Aug 16;33(14):4626–4638. doi: 10.1093/nar/gki775

Figure 1.

Figure 1

Last and ‘first’ common ancestors. (A) A scheme of the procedure used to derive the gene sets in the last and ‘first’ common ancestors of eukaryotes. (B) The gene sets of ‘first common ancestors’ of eukaryotes, archaea and bacteria derived from the gene repertoires of the respective last common ancestors and identification of ancestral duplications. Abbreviations: A, archaea; B, bacteria; E, eukaryotes; LECA, last eukaryotic common ancestor; FECA, first eukaryotic common ancestor; LACA, last archaeal common ancestor; FACA, first archaeal common ancestor; LBCA, last bacterial common ancestor; FBCA, first bacterial common ancestor; LUCA, last universal common ancestor.