Scale representation of the Fugu genomic region encompassing 80 kb compared with the equivalent genomic region of human Xp22 (not drawn to scale). In total, 68 kb of Fugu genomic DNA have been sequenced, of which 62 kb are contiguous. (Broken horizontal line) The region not completely sequenced in both Fugu and humans, which, in Fugu, spans ∼18 kb. (Dotted line) A distance of ∼1 Mb in human DNA. (Cross-lines) The borders of conserved gene order. The complete coding region of each Fugu gene is represented by aligned solid boxes and the transcriptional direction is indicated by the arrow above each gene. The results of the exon prediction programs FGENES, GENSCAN, and GRAIL 2 are shown (bottom), with each predicted exon shown by a solid box.
