Across
- 5. trait that increases an organism's survival in a particular environment
- 6. structures of similar functions that are a result of convergent evolution (ex. webbed feet)
- 8. structures that have diminished in size because of un-use, ex tailbone in humans
- 10. source of variation, random changes in DNA
- 14. type of evolution in which two species evolve together
- 15. overall theory that organisms change over time to best suited to their environment
- 16. observed natural selection of related species on the Galapagos because of a variety of environments
- 17. combination of adapations allow for a species to best fit for an environment
Down
- 1. type of evolution that occurs with related species in different environments
- 2. evolution occurring slowly over time with small changes, opposite of punctuated equilibrium
- 3. ____ tree show evolutionary relationships
- 4. differences within a trait among those in population
- 7. type of evolution that occurs in related species in similar environments
- 9. type of evolution that occurs with unrelated species in similar environments
- 11. this type of selection occurs when the environment chooses which traits are best suited for an environment
- 12. same structures because of a common ancestor (ex. wing of bat and arm of human)
- 13. family group that human belonged to that broke from other primates