  An approach based on using the idea of distinguished coding phase in explicit
form for identification of protein-coding regions (exons) in whole genome has
been proposed. For several genomes an optimal window length for averaging
GC-content function and calculating codon frequencies has been found.
Self-training procedure based on clustering in multidimensional space of
triplet frequencies is proposed. For visualization of data in the space of
triplet requiencies method of elastic maps was applied.
