Evolution

3. collection of alleles found in all of the individuals of a population
4. study of fossils or extinct organisms
8. proportion of one allele, compared with all the alleles for that trait, in the gene pool
12. principle that states that the changes in the landforms result from slow changes over time
13. theory that states that the geological processes that shape earth are uniform through time
14. body part that has the same function but has a different structure
16. process by which humans modify a species by breeding it for certain traits
17. remnants of an organ or structure that functioned in an earlier ancestor
19. measure of an organism's ability to survive and produce offspring relative to other members of a population
20. a change in species over time

1. all the individuals of a species that live in the same area
2. study of the distribution of organisms around the world
5. body part that is similar in structure but has different structures
6. ability o0f a trait to be passed from one generation to the next
7. differences in physical traits of an individual from the group to which it belongs
9. trace of an organism from the past
10. mechanism by which individuals that inherited beneficial adaptions produce more offspring on average than do other individuals
11. inherited traits that is selected for over time because it allows the organisms to better survive in the environment
15. theory that states that natural disasters shaped earth's landform and caused extinction of some species
18. group of organisms so similar to one another that they can breed and produce fertile off spring