Evolution

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Across
  1. 4. A trait that can be different from other species or the same.
  2. 6. A tree that shows how related different species are and different traits species have.
  3. 7. The study of how related species are based on how close they are.
  4. 8. When a species develops new traits to adapt to new struggles.
  5. 12. Body parts that seem similar at first glance but are not actually from a common ancestor.
Down
  1. 1. Body parts that are similar in structure and come from a common ancestor.
  2. 2. Structures that used to serve a function but no longer do.
  3. 3. _______ is a variable that can affect the evolution of species through natural selection or biogeography
  4. 5. The study of DNA to see how related different species are.
  5. 9. The study of embryos to see how similar species are
  6. 10. The study of _______ is seeing how species are related through body parts.
  7. 11. The study of _______ are found underground in a certain order to help us see evolution