Across
- 4. A separation of a population due to a physical barrier
- 7. The pattern of evolution that shows new species being formed from a common ancestor
- 9. Scientist who believed that organisms changed over time from simple to more complex by passing on acquired traits to offspring.
- 12. Fossil record shows that many organisms have had a slow and steady change
- 16. Slow gradual change in a population of organisms over time
- 18. Structures that share a similar shape or form; common ancestor
- 19. The close resemblance in form/behavior between one species that is the model for deception and another species that it mimics
- 21. similarities The BEST evidence to use for supporting evolutionary relationships among species
- 24. Any heritable (passed down) characteristics that help an organism survive and reproduce
- 26. The idea that organisms better suited for their environment will survive and reproduce
- 28. Scientist who helped Darwin come up with the theory of evolution by natural selection
- 30. Formation of new species
- 31. The father of evolution
- 32. A type of divergent evolution in which one species splits into many different species
- 33. Structures in different species that share the same function
Down
- 1. States prokaryotes moved inside a host prokaryote cell to eventually form eukaryotic cells
- 2. Occurs due to differences in courtship behavior
- 3. A revision of Darwin's original theory of evolution to include modern genetics
- 5. The pattern of evolution that shows unrelated species evolve similar characteristics
- 6. Populations of bacteria or insect pests are no longer affected by medicine or chemical sprays due to beneficial mutations and natural selection in the population
- 8. Occurs when a species develops different reproductive cycles
- 10. Some organisms in the fossil record show equilibrium interrupted with brief periods of rapid change
- 11. Scientist who believed human population growth would lead to famine and poverty (struggle for existence)
- 12. The total number of different genes available to a species
- 13. Two species evolve in response to changes in one another; one species would not survive without the other
- 14. The shared ancestor of new, different species that came from one population
- 15. Study of embryos that show significant similarities due to a common ancestor
- 17. Structures that have no useful purpose
- 20. Adaptations in the form, patterning, color and behavior that help them blend with the surrounding and escape detection
- 22. Geologist who believed the natural processes over a long period of time were responsible for changes to the Earth's surface.
- 23. The competition between organisms in order to survive
- 25. Scientist who suggested that the Earth was much older than previously thought.
- 27. Branches show proposed ancestry
- 29. that most evolutionary discoveries are based on; found in sedimentary rock