Exon / Intron structure
of some vertebrate genes
In eukaryotes, the intervening
separate the expressed exon
regions. Intron / Exon organization varies widely among genes: a single
intron may constitute a minority of the locus, as in insulin,
multiple introns may make up a majority of the sequence, as in ovalbumin.
Some genes contain dozens of introns that constitute >99% of the