The year 2004 marked the celebration of the 50th anniversary of Watson and Crick’s elucidation of the DNA double helix structure, a real mark in the history of science. Since that time auspicious moment in 1954, there were several key advances in biology that contributed to the beginning of the genomics era, marked by the sequencing of a,complete genome for the first time in 1995, for the bacterium Haemophilus influenzae. Since then, there has been an explosion of information; currently a new organism is sequenced nearly every week. At this time,there are 1543 genome projects, among which 285 have complete genomes, 740 are ongoing prokaryotic genome projects and 517 are ongoing eukaryotic genomes (http://www.genomesonline.org/). Read more. . . .