Across
- 2. a visible or invisible difference in population
- 5. characteristics that improve likelihood of survival
- 10. reproduce with itself
- 11. organism with certain characteristics that increase chance of survival
- 12. provides you with characteristics
- 16. ancestors would be found in older rocks
- 17. Occurs in somatic body cells
- 18. observable characteristics
- 19. changes in genetic material
Down
- 1. coastlines of neighboring continents have similar fossils
- 3. variable offspring
- 4. less likely to survive due to a trait
- 6. "descent with modification"
- 7. fill in the "gaps" in the fossil records
- 8. agents that cause mutation
- 9. Occurs in reproductive cells
- 11. formation of new species
- 13. the study of the inner workings of an organism
- 14. process that helps an organism survive and reproduce
- 15. the genetic constitution of a individual organism