Across
- 3. two organisms are in the same species if they can __ together
- 5. artificial selection is also called __ breeding
- 6. Darwin's boat's name
- 8. body parts that resemble each other in related species are __ structures
- 9. if two species are related, then they have a __ ancestor
- 11. step 3 of speciation
Down
- 1. Darwin's first name
- 2. body parts that an organism has but doesn't use is a __ structure
- 4. Mrs. Zuhl's dog's name
- 5. the formation of a new species
- 7. the study of DNA is __ biology
- 10. step 1 of natural selection