Evolution and Natural Selection

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Across
  1. 3. offspring produced by one parent
  2. 4. genetic drift
  3. 5. an infectious microbe
  4. 7. movenment of genes
  5. 10. parts of the species that make it survive
  6. 15. when species adapt in similar ways
  7. 16. duplication of viruses
  8. 19. pattern species share a common ancestor
  9. 20. choosing someone to mate with
Down
  1. 1. large group of single-cell microorganisms
  2. 2. process of changing
  3. 6. disapperance of a species
  4. 8. process of adapting and changing
  5. 9. record of how creatures evolved
  6. 11. doesn't have a nucleus
  7. 12. reproduction of viruses
  8. 13. two species affect each other
  9. 14. has a nucleus
  10. 17. offspring produced by two parents
  11. 18. different versions of the same gene