Across
- 4. rock formed from extreme heat and pressure
- 8. the height or intensity of a wave
- 9. the process that creates new crust at divergent boundaries
- 10. the lowest point on a transverse wave
- 12. a segment of DNA
- 13. the theory that Earth's structures and movements are caused by moving plates on Earth's surface
- 14. rock formed from layers of cemented sediment
- 15. waves that do not require a medium
- 19. allele that is expressed by a capital letter
- 23. structures that have the same function but do not share a common ancestor
- 25. X-shaped cellular structures made of coiled up DNA
- 27. when humans intervene in reproduction to produce the most desirable traits
- 30. energy sources that take millions of years to form
- 35. waves that move back and forth
- 36. the distance from one point on a wave to the same point on the next wave
Down
- 1. the gradual change in a species over time
- 2. structures that indicate a common ancestor but may perform different functions
- 3. crude oil, natural gas, and coal are examples of these
- 5. waves that move up and down
- 6. when the DNA from homologous chromosomes is swapped to create genetic variation
- 7. plates that move towards each other
- 11. any change in the structure of DNA
- 16. a trait that helps an organism survive in its environment
- 17. rock formed from magma that has cooled
- 18. how many waves pass a point in a given amount of time
- 20. form of cell division with 2 identical daughter cells
- 21. the highest point on a transverse wave
- 22. allele that is expressed by a lowercase letter
- 24. waves that do require a medium
- 26. plates that move away from one another
- 28. type of asexual reproduction where a single-celled organism splits itself in half
- 29. form of cell division with 4 unique daughter cells
- 31. the study of organisms in the early stages of development from zygote to baby
- 32. a variation of a gene
- 33. plates that slide past one another
- 34. energy sources that can be replenished in a short amount of time