Figure 4
From: Multiple independent evolutionary solutions to core histone gene regulation
Relationships among core histone gene promoter sequences. Promoter sequences are related by comparisons of cis-regulatory motif vectors, as described in the text. Individual promoters are ordered by similarity along each axis. Pair-wise correlations between promoter-specific vectors are color coded according to the scale bar shown. The block color structure along the diagonal reveals clusters of related promoter sequences.