Across
- 1. a process in which organisms better suited to their environment are able to survive and reproduce more offspring
- 5. the physical properties of an organism, everything you can observe from how they look to how they act.
- 7. the process of modifying living things (as plants and animals) by selective breeding controlled by human beings.
Down
- 2. the theory that all the kinds of living things that exist today developed from earlier types
- 3. are the basic unit of heredity
- 4. a mistake or a change in a living thing's DNA
- 6. Deoxyribonucleic acid
- 8. matching genes; one from our biological mother, and one from our biological father.