This track shows predicted gene fragments based on predictions of individual conserved exons from the exoniphy program. The exon predictions shown in the `exoniphy' track for this assembly (based on hg16/mm3/rn3 alignments and mapped to hg17) were used. Exons were strung together into gene fragments by a simple program called `stringiphy': essentially, any two consecutive predicted exons were joined that were on the same strand, were less than 20 kb apart, had consistent reading-frame phase, and were not separated by predicted start or stop codons. Exons overlapping predicted pseudogenes and exons not falling on the human/mouse syntenic net were discarded before running stringiphy.