Figure 2.
Asymmetric protein sequence evolution is initiated very soon after gene duplication and persists in modern duplicates. The tree was reconstructed from A2asym and shows branch lengths expressed as percentages of the length of the corresponding branches on a tree reconstructed from equivalent single-copy sequences (see text for details). Branch lengths are the averages of 100 pseudo-replicates and the coloring scheme is the same as in Figure 1.
