This document summarizes different types of biological evidence that support the theory of evolution: 1. Comparative anatomy studies body structures across species and finds that more similar structures indicate a closer evolutionary relationship. 2. Embryology finds that more closely related species have more similar embryo development. 3. Molecular biology, such as comparing DNA sequences, finds that a higher similarity in genes and proteins indicates a closer evolutionary relationship between living species. This provides further evidence supporting theories from comparative anatomy and the fossil record.