Evidence of Evolution
The Fossil Structure
The Fossil Structure
- Fossils are formed when organisms are preserved before they decay
- Fossils are formed in sedimentary rock
- Different kinds of fossils – Imprints, Casts
- Fossils can be dated through Carbon 14
- Fossils can be used to date other artifacts
- Homologous structures are similar and are derived from the same body part
- If structures are similar, it is assumed the animals who possess them are related
- Vestigial Structures are body parts that are reduced in size and appear to have little to no function
- Analogous structures are similar structures that do not indicate evolutionary relationships
- An embryo is an organism in its earliest stage of development
- An organism develops in the same way as its ancestors
- Organisms that are related have the same DNA sequence