Biology Evolution

1. the movement of alleles from one population to another
8. a structure that has no apparent function
9. a model that says evolution occurs slowly, over long periods of time
10. group of organisms that can breed and produce fertile offspring
13. ___ evolution is closely related species evolve in different directions
14. a structure that is similar in function but different structure; not of the same evolutionary origin
16. this theory proposes that the organelles of eukaryotic cells were once prokaryotic cells that were engulfed by larger prokaryotic cells
17. all of the individuals of a species that live in the same area

2. a change in a species over time
3. the branch of biology that studies the early development of a species
4. ___ evolution is when unrelated species evolve similar characteristics
5. evolution of two or more species from one ancestral species
6. the mechanism by which individuals have inherited beneficial adaptations
7. differences in physical traits of an individual within a population
11. an inherited trait that allows an organism to better survive in its environment
12. the remains of an organism that lived in the past
15. a structure that is similar on different organisms but performs different functions