Across
- 3. the two main causes of genetic variation are gene shuffling and...
- 9. The ______ theory suggested that a cell engulfed another to make a eukaryotic cell.
- 11. Who had the idea of acquired traits?
- 12. Both mitochondria and ______ have DNA.
- 13. Fossil Records and embryology both are ______ for evolution.
- 15. One of Derwin's first stops on his voyage were the _________ Islands.
Down
- 1. Creatures have changed over time through the process of ______ selection.
- 2. ______ Cells appeared on earth 1.8 bya.
- 4. When earth was first formed there was no...
- 5. The Law of _________ states that younger rock layers are on top of older ones.
- 6. The spontaneous generation theory was replaced with the theory of...
- 7. the amount of time it takes for half of the isotope is called...
- 8. Only about one in _______ organisms have became fossils.
- 10. Darwin made his voyage on a ship called the...
- 14. The person to first publish the idea of evolution was...