click below
click below
Normal Size Small Size show me how
Chapter 15
Section 2: Evidence of Evolution
Term | Definition |
---|---|
Fossil | The remains or traces of an organism that died long ago |
Superposition | Principal that states if the rock strata at a location have no been disturbed, the lowest stratum was formed before the strata above it |
Relative Age | Its age compared to that of other fossils |
Absolute Age | Estimate the time since formation of the rock |
Biogeography | The study of the locations of organisms around the world |
Homologous Structure | Anatomical structures that occur in different species and that originated by heredity from a structure in the most common ancestor of the species |
Analogous Structure | Structures that have closely related functions but do not derive from the same ancestral structure |
Vestigial Structure | Resemble structures with functional roles in related organisms |
Phylogeny | The relationships by ancestry among groups of organisms |