<p class="EstiloaabstractAntes0pt">The objective of this study was to evaluate and apply the Bioinformatics theoretical contents and practical for the course students in Biological Sciences Degree Fully enrolled in the disciplines of General Genetics and Molecular Biology, State University of Ceara in 2010. The theoretical approach previously tested (RIBEIRO JUNIOR, 2011) consisted of a presentation of historical concepts, basic and specific to current advances in research involved the areas of molecular biology. The practice of "<em>Building a Molecular Phylogeny in Silico</em>" is designed to become functional in practice the concepts presented above, using the database of the <em>National Center for Biotechnology Information</em>, NCBI, ...