HAVE YOU BEEN ZOMBIFIED?

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Across
  1. 3. Organism infected by another
  2. 7. Organism living at another's expense
  3. 8. Turned into a zombie by a virus
  4. 10. Dawkins' evolutionary theory
  5. 11. The struggle between a host’s overall fitness and the interests of certain DNA segments.
  6. 12. Known as the love hormone
  7. 14. Viral sequences that integrate into the host genome and replicate themselves.
  8. 16. Circulating cells from another individual
  9. 18. Study of heredity and variation
  10. 19. Described as insatiable "brain eaters" in discussions about technology
  11. 20. Host to jewel wasp offspring
  12. 22. Control or influence for benefit
  13. 23. Relating to how we act
  14. 25. Mysterious, puzzling, and difficult to understand.
  15. 26. Study of communication evolution
Down
  1. 1. Parasite in cat intestines
  2. 2. Genes impacting beyond the organism
  3. 4. Living entity with biological structure
  4. 5. Seize control unexpectedly
  5. 6. Powerful tool against nature's complexities
  6. 9. Makes us vulnerable to parasites
  7. 13. Manipulative behavior influenced by genes
  8. 15. Cultural idea or style that spreads
  9. 17. Insect manipulating cockroaches
  10. 21. Used in behaviorism to increase the likelihood of a behavior.
  11. 24. Tiny organisms altering host behavior