Exon / Intron structure of a large eukaryotic gene
The
transcribed gene region for the structural protein Dystrophin extends over a
distance
of ~ 2.5 million base pairs (2.5 Mbp),
and includes several dozen exons
[dark green boxes].
The introns [light
green boxes] occupy >
90% of the gene region: some of these intervening
sequences are more
than 200,000 bp (200 Kbp)
in
length.