The scientific discipline, which searches for genes in genomes and raises questions about evolutionary relationships is called Bioinformatics. Molecular biologists are interested in particular gene products (proteins) and in more details investigate their functions. Molecular function is permitted by structural conformations of structural folds, which in turn have been shown to depend in part on evolution. Structural Biology gives insight into the complex world of protein folds and conformations, Structural Bioinformatics works on this data at a theoretical level. Got it?
Books:
"Biological sequence analysis", 1998, by R. Durbin, S. Eddy, A. Krogh and G. Mitchison
"Structural Bioinformatics", 2003, by Ph. Bourne and H. Weissig