Across
- 4. a trait that helps an organism survive better
- 6. a group of organisms that can mate and produce fertile offspring
- 7. the molecule that codes for traits
- 9. a characteristic like eye color or fur type
- 11. anatomy that have the same structures but for different functions
Down
- 1. theory that whoever has the best traits will survive and reproduce the most
- 2. a random change in DNA that can lead to an adaptation
- 3. evolution supports the theory that all living things have 1 common ______
- 5. the study of embryos (shows common ancestry)
- 8. a change over time to a population's genetics
- 10. preserved bones of ancient organisms