Fig. 6.

FFP comparison of intronic genomes. (A) Concatenated intronic regions of mammals were compared using FFP and RY coding. The tree was constructed with neighbor joining, low complexity, high frequency filtering and l = 18. Nodes indicated have <1.0 jackknife support. Scale indicates Jensen–Shannon divergence length. (B) Topological convergence. A neighbor joining tree was constructed from words of length l = 1–24. The topology of each tree reconstructed from words of length l is compared with trees from l-1. All trees converge to the same topology above l = 16.