Species Identification

Classification methods traditionally were traditionally based on physical similarities and differences. When scientists take a look at classifying individual organisms into groups and species, it is also important to look beneath the surface. This sometimes involves examining organisms on a molecular level, which is made possible with today's advances in technology. In this topic, you will take a look at different ways scientists find evolutionary relationships among species, which involve anatomy, DNA, and embryonic development.

Essential Questions

• How does biochemical evidence provide clues to evolutionary history?
• How do diverse organisms share similarities in structural characteristics?