Homology modelling also known as comparative modelling of protein. Homology is one of the most common structure prediction methods in structural genomics proteomics. Homology relies on the identification of one or more known protein structures likely to resumble the structure of the query sequence. Genomics is defined as the study of genes and their function, and related techniques. Genomics is the interdisciplinary field of biology focusing on the structure , function, evolution mapping and editing of genomes.