Evolutionary History

2. Evolution Accumulation of differences between groups which can lead to formation of a new species.
3. Selection Theory of Evolution developed by Darwin, based on four ideas.
6. Selection Darwin's term for selective breeding. Organisms selected for certain traits.
9. Structure Phylogeny Reduced form of a functional structure that indicates shared ancestry.
10. Evolution Organisms not closely related with same traits.
11. Changes in at least two species genetic compositions reciprocally affect each others Evolution.
12. Preserved evidence of an organism, often found in sedimentary rock.

1. Hereditary changes in groups of living organisms over time.
4. Measure of a traits relative contribution to the following generation.
5. Structure Automatically similar structure inherited from common ancestors.
6. Inherited characteristics of a species that develops over time in response to an environmental factor.
7. Structure Structure with same function but different construction but was not inherited from a common ancestor.
8. Radiation Diversification of species into a number of different species, often in a short period.