Genomics is the study of the genomes of organisms. A genome is a complete set of genetic instructions for running and maintaining an organism. Genomics is "the study of genes and their function. Genomics aims to understand the structure of the genome, including the mapping genes and sequencing the DNA. Genomics examines the molecular mechanisms and the interplay of genetic and environmental factors in disease."* Cancer genomics looks at the changes in the genome that may lead to cancer. * http://www.medterms.com