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