We are living in an unprecedented age of biological discovery and the application of biological knowledge. Programmed DNA sequencing delivered, in the year of 2001 over the 2.6 billion base pairs of DNA series in the human genome the Human Genome Project and the genomes of several other organisms have either earlier been or are being sequenced too. This vast and ever-raising, wealth of DNA sequence data is a main asset for genomics, the learning of an organism's genome. One of the main key target is to understand the functions of the vast numbers of new genes predicted by genome sequencing and a field called as functional genomics