The analysis of DNA sequences through information theory methods is re
viewed from the beginning in the 70s. The subject is addressed within
a broad context, describing in some detail the cornerstone contributio
ns in the field. The emerging interest concerning long-range correlati
ons and the mosaic structure of DNA sequences is considered from our o
wn point of view. A recent procedure developed by the authors is also
outlined. Copyright (C) 1996 Pattern Recognition Society.