. Easily visible anatomical traits are only one kind of evidence scientists rely on when classifying organisms. Additional evidence comes from many different sources, including the fossil record and genomic analysis. Explain how these additional sources of evidence together are used to build a cladogram.
Evolution The process by which modern organisms have descended from ancient organisms over time
Common ancestor An ancestor shared by two or more descendant species
Fossil Preserved remains of ancient organisms
Homologous structure Structure that are similar in different species due to common ancestry
Vestigial structure Structure that is non-functional, or reduced in function
Analogous structure Structure that evolved independently in different organisms because the organisms lived in similar environments or experienced similar selective pressures
Embryology The study of embryos and their development
Biogeography The study of where organisms live currently, and where their ancestors lived in the past.