Evidences from morphology and anatomy

1. Comparative morphology and anatomy of individual organ and organ systems of diverse forms of organisms reveal their phylogenetic relationships and thus provides important evidences of evolution.
2. Homology is a relationship defined between structures or DNA derived from a common ancestor and illustrates descent from a common ancestor.
3. A common example of homologous structures in evolutionary biology are the wings of bats and the arms of primates.
4. Analogous structures are physically (but not genetically) similar structures that were not present the last common ancestor.
5. Bat wings and bird wings evolved independently and are considered analogous structures.