Evolutionary Biology

1. Layers of sediment compressed and glued together by chemical reactions and pressure in sedimentary rock.
3. Defined as a group of genetically similar organisms that can potentially interbreed to produce viable offspring.
6. A diagram that displays each branch showing a new group or species that have evolved from the ancestral species and the order in which they have evolved.
7. Comparing different animals at different stage of development.
9. The one of the different chunks in the geological time scale.
11. The process of forming a fossil from a living organism. The following steps are the main stages involved in the process.
14. Estimating the age of rocks or fossils in (millions of) years is called absolute dating.
15. Evolution that occurs when a new species evolves from an existing species. The new species has different characteristics than the ancestral species.
16. The evolutionary history of a species.

2. The preserved impressions of an organism.
4. Radioisotopes decaying to stable atoms at a known rate.
5. The rock where fossils are normally found in.
8. The structural morphology of an organism refers to its physical structure, or the way it was 'built'. Comparing structures of two different species.
10. The characteristics that are selected for, are determined by the specific selective pressures of the environment.
12. The study of where in the world plants and animals live.
13. The change in heritable characters of a population or species over time.