Evolution

4. this is the struggle for resources between organisms
6. a branching tree diagram that shows ancestral relationships among organisms
7. changes in the DNA sequence of an organism that occur during DNA replication
11. a trait that gives an organism an advantage which allows it to survive more than an organism that doesn’t have it
12. this theory explains the origin of how mitochondria and chloroplast merged with prokaryote cells
14. theory that states that the inherited traits of organisms have changed over time
15. the history of life as documented by fossils
16. Similar structures that related species have inherited from a common ancestor

1. the movement of alleles from one population to another.
2. the process by which organisms that are better adapted to their environment are more likely to survive and reproduce
3. scientific theory that nonliving matter evolved into living organisms through a series of chemical reactions.
5. a change in allele frequencies due to chance
8. name of the naturalist that traveled around the world and made observations that led to the theory of evolution
9. occurs when two organisms that lack a recent common ancestor end up more and more alike as they adapt to a similar ecological niche.
10. the remains or imprints of organisms from earlier geological periods preserved in sedimentary rock
13. these were the first living organisms