**5. Conclusions**

The entropy has been used to select SARS-COV genome regions for stability zone detection. Even though a great deal of genetic variation is generally found, the present entropy calculation is sufficient to observe low informational complexity regions, which are representation of the conserved sites of the sequence. The low entropy regions are related to important functional domains in the proteins of these viruses. Based on entropy calculations seven SARS-COV genomes have been phylogenically described. The clusters of the genome formation is well understood.
