Evolution Gate

3. soup, a selection that favors the norm
4. the law of __________ states that older fossils are found in older rock layers
6. _______________ generation is the idea that living things came from non living things
11. the place scientists believe life began
13. selection, organisms with favorable variations are selected by nature to survive
15. the evolution of a new species
17. isolation caused by a physical barrier
19. when tree sap gets preserved in sock
20. mistakes in the DNA that are the foundation for evolution
21. drift, the change in gene frequency by chance or random events
22. the father of evolution
23. pool, all of the genes in a population
25. the change in gene frequency over time
26. a selection that favors the norm
27. selection that favors both extremes

1. when a thing object leaves its print
2. when minerals fill the space left by decayed organisms
5. fossils that are footprints
7. the original atmosphere contained no ___________________.
8. evidence that organisms have existed in the past
9. the hole left by decayed organisms
10. body structures of different organisms that have a similar structure
12. equilibrium, organisms stay the same for long periods of time they evolve rapidly
14. when formerly related species become increasingly different
16. body structures that are no longer used
17. the migration of genes into or out of a population
18. when distantly related species evolve simala features
23. evolution that is slow and steady
24. the type of bird that Darwin studied