
The distribution of sequences that are conserved between human and pufferfish. (A) The distribution of human–pufferfish conserved sequences. A total of 14,068 conserved sequences are plotted relative to their location within 5 kb of the nearest RefSeq transcription start site (TSS) in the human genome. The y-axis indicates the number of sequences (50-bp window sizes) found 5 kb upstream or downstream of a TSS. (B) The distribution of human–pufferfish conserved sequences that are associated with histone acetylation islands. A total of 2459 conserved sequences associated with acetylation islands are plotted as in A. The hatched box indicates sequences found within 1 kb of a TSS.











