Science

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Across
  1. 6. characteristic that helps an animal
  2. 8. structures from common ancestors
  3. 10. develop similarly in many organisms
  4. 12. deoxyribonucleic acid
  5. 13. animal we share the most DNA with
  6. 15. same function but not related
  7. 16. primitive whales
  8. 17. extinct mammal with whale like teeth
  9. 18. result of an environmental factor
  10. 19. DNA that controls development
  11. 20. study of body structures
Down
  1. 1. same species with different traits
  2. 2. parts in an organism that arent used
  3. 3. shows that animals once existed
  4. 4. survival of the fittest
  5. 5. species changing to benefit them
  6. 7. changes over time
  7. 9. founder of evolution
  8. 11. where an organism lives
  9. 14. transition of genes from parent to kids