Across
- 7. → Human groups living during early dog domestication
- 12. → Theory that dogs were domesticated independently in more than one place
- 13. → Behavioral trait strongly selected during early domestication
- 15. → Mixing of genetic material from different populations
- 18. → A span of dates used instead of a single fixed time
- 19. → A line of descent from ancestral populations
- 20. → Human movement that often carried dogs with it
- 22. Age → Period during which extinct wolf ancestors of dogs lived
- 23. → The complete genetic material of an organism
- 25. → Study of human and animal remains from the past
- 28. → A warning or qualification about scientific conclusions
- 29. mosaic → Description of modern dogs containing DNA from multiple ancient populations
- 30. → Ongoing scientific disagreement about domestication models
- 31. → Skull portion that changed shape during domestication
- 33. DNA → Genetic material extracted from archaeological remains
- 35. → A method of understanding the world that evolves with new data
- 36. → The process by which wolves gradually became adapted to living with humans
- 37. → Updating scientific models based on new discoveries
- 38. → Siberian region where a 33,000-year-old dog-like canid was discovered
- 39. flexibility → Ability to consume a wide range of foods
Down
- 1. → Theory that dogs were domesticated once
- 2. → Process favoring traits that improved survival near humans
- 3. → Facial feature shortened in early dog domestication
- 4. → Food-production system that emerged after early dogs existed
- 5. → A canid showing early domestication traits but not a true domestic dog
- 6. turnover → Replacement of one dog population by another over time
- 8. → A scientific explanation that can change with new evidence
- 9. → The wild ancestor of domestic dogs
- 10. → Range of genetic variation found in ancient dogs
- 11. → Carbohydrate that later dogs adapted to digest more efficiently
- 14. → The complete disappearance of ancient dog lineages
- 15. → Gene associated with starch digestion in dogs
- 16. → The physical form and structure of an organism
- 17. → Actions and temperament, which DNA cannot fully reconstruct
- 21. → Loss of ancient dog populations due to incoming groups
- 24. → Data used to support scientific conclusions
- 26. → A gradual process rather than a single event
- 27. wolves → Wolf populations that contributed DNA to dogs but no longer exist
- 32. → Lack of complete agreement or definitive answers in science
- 34. → Mating between early dogs and wolves that introduced genetic diversity