Across
- 3. Changes in at least two species genetic compositions reciprocally affect each others Evolution.
- 7. Hereditary changes in groups of living organisms over time.
- 10. Reduced form of a functional structure that indicates shared ancestry.
- 11. Measure of a traits relative contribution to the following generation.
- 12. Theory of Evolution developed by Darwin, based on four ideas.
Down
- 1. Preserved evidence of an organism, often found in sedimentary rock.
- 2. Accumulation of differences between groups which can lead to formation of a new species.
- 4. Automatically similar structure inherited from common ancestors.
- 5. Organisms not closely related with same traits.
- 6. Structure with same function but different construction but was not inherited from a common ancestor.
- 8. Diversification of species into a number of different species, often in a short period.
- 9. Darwin's term for selective breeding. Organisms selected for certain traits.
- 13. Inherited characteristics of a species that develops over time in response to an environmental factor.