Conceptual

Bioinformatics in Phylogenetics and Molecular Clocks

Phylogenetics is a domain within bioinformatics and evolutionary biology that utilizes character data, specifically molecular sequence information, to describe hierarchical ancestral relationships among organisms or genes through phylogeny construction algorithms. The core theoretical mechanism involves generating tree topologies—represented as rooted or unrooted structures with nodes defining putative ancestors—to test hypotheses regarding species history against null models of neutral evolution and assess deviations driven by selection.