Genomics
Genomics is the study of the Genome.
In greater detail, genomics relies on comparative analysis of the total DNA sequence within the cells of different species in order to understand evolutionary pathways, the genes differing within species and for the study of genetics.
References
Lodish, H. et al (2013) Molecular Cell Biology, 7th edition, New York: W.H.Freeman and Company, Glossary, Page G-10