Domestication of the dog - Quiz
Domestication of the dog
  • 1. What type of vast steppe stretched from Spain across Eurasia and into Alaska and the Yukon during the Late Pleistocene glaciation?
A) An alpine steppe
B) A taiga steppe
C) A mammoth steppe
D) A boreal steppe
  • 2. What was the maximum regional temperature change associated with climate oscillations at the close of the Late Pleistocene era?
A) Up to 25 °C (45 °F)
B) Up to 16 °C (29 °F)
C) Up to 10 °C (18 °F)
D) Up to 5 °C (9 °F)
  • 3. Is there evidence of megafaunal extinctions at the height of the Last Glacial Maximum (26,500 YBP)?
A) Only in Eurasia
B) No, there is no evidence
C) Only in North America
D) Yes, extensive evidence
  • 4. What happened to predators that depended on species that became extinct during the Late Pleistocene?
A) They migrated to the tropics
B) They switched entirely to eating plants
C) They immediately domesticated themselves
D) They suffered coextinction
  • 5. When does the most recent common ancestor for all C. lupus specimens studied (modern and extinct, excluding Himalayan and Indian plains wolves) date to based on mitochondrial genomes?
A) 26,500 YBP
B) 80,000 YBP
C) 32,000 YBP
D) 1 million YBP
  • 6. Where were the earliest grey wolf fossil specimens found?
A) Southern Spain and the Iberian Peninsula
B) Central Eurasia and the Ural Mountains
C) The high Arctic islands of Canada
D) Eastern Beringia at Old Crow, Yukon, and Cripple Creek Sump, Fairbanks
  • 7. What is the possible maximum age of the earliest grey wolf fossil specimens according to the fossil record?
A) 25,000 YBP
B) 1 million YBP
C) 80,000 YBP
D) 32,000 YBP
  • 8. When do all modern wolves (excluding the Himalayan and Indian plains wolves) show a most recent common ancestor dating to?
A) 1 million YBP
B) 25,000 YBP
C) 80,000 YBP
D) 32,000 YBP
  • 9. What event does the common ancestor date of 32,000 YBP coincide with for modern wolves?
A) The height of the Last Glacial Maximum
B) The extinction of the dire wolf
C) The commencement of their global demographic decline
D) The complete domestication of the dog
  • 10. What may have caused changes in the morphology and body size of wolves during the Late Pleistocene?
A) Shifts in global magnetic fields
B) Volcanic ash accumulation
C) Differences in their prey size
D) Direct human breeding programs
  • 11. What resulted in larger wolves during the Pleistocene?
A) A preference for larger prey
B) Living in warmer lowland regions
C) A diet consisting exclusively of fish
D) Isolation on remote islands
  • 12. How are Pleistocene grey wolves described regarding their cranio-dental features compared to modern ones?
A) Lacking premolars entirely
B) More gracile and delicate
C) More cranio-dentally robust
D) Possessing longer and narrower rostra
  • 13. What specialized adaptations did the robust features of Pleistocene wolves serve?
A) Digging deep underground burrows
B) The processing of carcass and bone associated with Pleistocene megafauna
C) Eating tough aquatic vegetation
D) Catching fast-moving avian prey
  • 14. Which extinct wolf showed a similar increase in tooth breakage to some Pleistocene wolves?
A) The Ethiopian wolf
B) The Falkland Islands wolf
C) The Tasmanian wolf
D) The dire wolf
  • 15. What animal's tooth fractures were compared to those of Pleistocene wolves to indicate they were habitual bone crackers?
A) The saber-toothed cat
B) The African wild dog
C) The brown bear
D) The modern spotted hyena
  • 16. What does the presence of unique mitochondrial lineages in ancient wolves imply?
A) That they never interbred with other populations
B) That the ancient wolves went extinct
C) That they evolved directly into modern domestic cats
D) That they survived unchanged to the present day
  • 17. When did grey wolves suffer a species-wide population bottleneck?
A) Approximately 25,000 YBP
B) Approximately 80,000 YBP
C) Approximately 1 million YBP
D) Approximately 10,000 YBP
  • 18. During which glacial event did the grey wolf population bottleneck occur?
A) The Last Glacial Maximum
B) The Younger Dryas
C) The Holocene Thermal Maximum
D) The Late Pleistocene Interglacial
  • 19. Where did the single population of modern wolves expand out of to repopulate their former range?
A) A Himalayan refuge
B) An African refuge
C) An Iberian refuge
D) A Beringia refuge
  • 20. What did modern wolves do to the remaining Late Pleistocene wolf populations across Eurasia and North America as they expanded?
A) They protected them
B) They replaced them
C) They domesticated them
D) They drove them southward into Africa
  • 21. Did the modern source population of wolves give rise to dogs?
A) Probably not
B) Through direct lineal descent
C) Without a doubt
D) Yes, exclusively
  • 22. What did the admixture between modern wolves and dogs allow dogs to gain?
A) Coat colour genes related to immunity
B) Resistance to high altitudes
C) Carnivorous digestive enzymes
D) Larger body sizes and longer tails
  • 23. Which wolves are more directly ancestral to dogs than modern wolves are?
A) The Himalayan wolf
B) One or more ancient populations existing prior to the bottleneck
C) The Indian plains wolf
D) The modern dire wolf
  • 24. Which wolves were conceivably more prone to domestication by the first humans to expand into Eurasia?
A) Apex predators of the deep forest
B) Modern grey wolves from the Beringian refuge
C) Ancient wolf populations prior to the bottleneck
D) Spotted hyenas
  • 25. Where does an apex predator sit on the food chain?
A) On the mesopredator level
B) On the primary consumer level
C) On the top trophic level
D) On the bottom trophic level
  • 26. What depends on smaller animals and sits further down the food chain?
A) An apex predator
B) A mesopredator
C) A primary producer
D) An apex consumer
  • 27. Towards the end of the Pleistocene era, what status did most of today's apex predators hold, including the wolf?
A) Super-apex predators
B) Herbivores
C) Primary producers
D) Mesopredators
  • 28. What did one type of wolf population rise to become during the ecological upheaval at the close of the Pleistocene?
A) An extinct scavenger
B) A helpless herbivore
C) A pure mesopredator
D) Today's apex predator
  • 29. What did another wolf population join with humans to become?
A) A domestic livestock animal
B) A wild primate
C) A solitary nomad
D) An apex consumer
  • 30. What did the domestication of the wolf lineage ensure for it?
A) Its evolutionary success through expansion into a new ecological niche
B) Its return to a purely solitary lifestyle
C) Its permanent confinement to glaciers
D) Its immediate extinction alongside megafauna
  • 31. What long-standing scientific assumption regarding the origin of dogs was proven incorrect by a 2014 study?
A) That dogs evolved from the spotted hyena
B) That dogs evolved from the dire wolf
C) That dogs evolved from the modern grey wolf
D) That dogs were never related to canids
  • 32. According to the 2014 study, what are dogs actually descended from?
A) The Himalayan wolf exclusively
B) An ancient species of wildcat
C) The modern grey wolf
D) An extinct type of wolf
  • 33. What feature of Pleistocene wolves involved the temporalis muscle?
A) Complete atrophy
B) Pronounced development
C) Absence from the skull
D) Reduction in size
  • 34. What feature characterized the rostrum of Pleistocene wolves compared to modern wolves?
A) An elongated rostrum
B) A shortened rostrum
C) A missing rostrum
D) A brightly colored rostrum
  • 35. What type of premolars did Pleistocene wolves have?
A) Robust premolars
B) Reduced premolars
C) Brittle premolars
D) Flat herbivorous premolars
  • 36. What did the frequency and location of tooth fractures in Pleistocene wolves suggest about their behavior?
A) They exclusively hunted fish
B) They refused to eat bones
C) They only ate soft fruit and berries
D) They were habitual bone crackers
  • 37. What historical view did scientists hold regarding the grey wolf known today?
A) That it only appeared after the Holocene
B) That it was around for hundreds of thousands of years
C) That it descended directly from domestic dogs
D) That it originated in South America
  • 38. How did scientists react upon learning that dogs did not derive from the modern grey wolf?
A) They already predicted it in 1900
B) They were completely unsurprised
C) They were very surprised
D) They dismissed the finding as false
  • 39. Which specific wolf populations are excluded from the general mitochondrial genome grouping of modern and extinct grey wolves in the text?
A) The Arctic wolf and the Mexican wolf
B) The Himalayan wolf and the Indian plains wolf
C) The Yukon wolf and the Eurasian wolf
D) The dire wolf and the timber wolf
  • 40. What phenomenon occurred towards the end of the Pleistocene era alongside a global population decline in grey wolves?
A) The sudden appearance of modern humans in America
B) The domestication of the horse
C) Massive expansion of tropical rainforests
D) Extinctions of ecomorphs and phylogeographic shifts
  • 41. What scientific name was given to the domestic dog as a result of its emergence as a species?
A) Canis latrans
B) Canis familiaris
C) Canis aureus
D) Canis lupus
  • 42. The similarity between the dog and the grey wolf is the result of what process?
A) Parallel evolution in the wild
B) Recent cross-breeding in captivity
C) Substantial dog-into-wolf gene flow
D) Artificial selective breeding
  • 43. What was the first species and the only large carnivore to have been domesticated?
A) The dog
B) The wolf
C) The cat
D) The pig
  • 44. What type of selection is the domestication of the dog considered to be a prominent example of?
A) Artificial selection
B) Social selection
C) Sexual selection
D) Natural selection
  • 45. What was considered the first undisputed dog based on archaeological and genetic analysis?
A) The Erralla dog
B) The Ain Mallaha dog
C) The Palegawra dog
D) The Bonn–Oberkassel dog
  • 46. According to literature reviews, where was the dog most plausibly domesticated?
A) Sub-Saharan Africa
B) Eurasia
C) North America
D) Australia
  • 47. What is the oldest known human-dog coburial mentioned in the text?
A) Erralla dog
B) Palegawra dog
C) Bonn–Oberkassel dog
D) Ain Mallaha dog
  • 48. How old is the Bonn–Oberkassel dog coburial?
A) 7,000 cal BP
B) 11,400 cal BP
C) 17,500 cal BP
D) 14,500 cal BP
  • 49. Which glacial refuge did the Magdalenian culture expand from after the Last Glacial Maximum?
A) Franco-Cantabrian region
B) Italian peninsula
C) Carpathian region
D) Balkan region
  • 50. What culture did the Palegawra dog belong to?
A) Magdalenian culture
B) Zarzian culture
C) Natufian culture
D) Azilian culture
  • 51. Name one of the locations where Natufian dogs were found before agriculture.
A) Ain Mallaha
B) Erralla site
C) Kesslerloch
D) Abri le Morin
  • 52. Where were the Cyprus small dogs discovered?
A) Shillourokambos
B) Palegawra
C) Kebara Cave
D) Hayonim Cave
  • 53. How many ancestral lineages had diversified from each other by the close of the most recent Ice Age?
A) Two
B) Three
C) Five
D) Ten
  • 54. According to ancient dog samples, where was one of the five ancestral lineages found at 7,000 years before present?
A) Western Europe
B) Cyprus
C) Siberia
D) The Levant
  • 55. In which region was an ancient dog sample dated to 10,900 YBP found?
A) Karelia
B) Ancient America
C) Lake Baikal
D) The Levant
  • 56. An ancient dog sample dated to 7,000 YBP was found near which body of water?
A) Lake Superior
B) The Black Sea
C) Lake Baikal
D) The Caspian Sea
  • 57. A 2021 literature review implies that dog domestication began in which region between 26,000 and 19,700 years ago?
A) The Near East
B) East Asia
C) Western Europe
D) Siberia
  • 58. What type of analysis is used in attempts to reconstruct the dog's lineage through DNA sequences?
A) Morphological analysis
B) Cytological analysis
C) Histological analysis
D) Phylogenetic analysis
  • 59. What term is used to describe the difficulty in dating the divergence due to a short split period?
A) Post-domestication gene flow
B) Incomplete lineage sorting
C) Mutation sparsity
D) Phylogenetic drift
  • 60. In what year was the first draft genome sequence of a Pleistocene wolf published?
A) 2014
B) 2017
C) 2015
D) 2013
  • 61. Where was the Pleistocene wolf whose genome was published in 2015 found?
A) Last Glacial Maximum refuge
B) Przewalski region
C) Eurasian steppes
D) Taymyr Peninsula
  • 62. What did the 2017 study compare from three ancient dog specimens?
A) Pleistocene bone structure
B) Mitochondrial DNA
C) Whole genome sequencing of horses
D) Nuclear genome
  • 63. What kind of fossils were found dated over 30,000 YBP, supporting the 2020 study?
A) Pleistocene human remains
B) Modern wolf ancestors
C) Horse fossils
D) Dog-like fossils
  • 64. What environmental factor is mentioned as causing divergence changes?
A) Human agriculture
B) Dietary shifts
C) Domestication pens
D) Climate
  • 65. Which region's modern dogs showed greater genetic diversity than those from other regions in certain studies, suggesting a place of origin?
A) Central Asia
B) Western Europe
C) North America
D) Southeast Asia
  • 66. What factor strongly reduces genetic diversity and was associated with the formation of dog breeds?
A) Incomplete lineage sorting
B) Genetic bottlenecks
C) Introgression
D) Natural hybridization
  • 67. Which region was concluded by one DNA study to be the origin of dogs because local dogs exhibited the lowest levels of linkage disequilibrium?
A) Central Asia
B) Western Europe
C) Southern Siberia
D) The Middle East
  • 68. What does the Latin term 'cf.' mean in the context of the Canis cf. variabilis specimen?
A) Complete
B) Uncertain
C) Extinct
D) Common
  • 69. How many monophyletic clades do modern dog mDNA haplotypes resolve into?
A) Two
B) Four
C) Three
D) Five
  • 70. What percentage of the modern dogs sampled were included in Clade A?
A) 12%
B) 78%
C) 64%
D) 22%
  • 71. Which cave in Switzerland yielded a 14,500 YBP wolf found to be a sister group to Clade A and pre-Columbian fossil dogs?
A) Erralla cave
B) Kesslerloch cave
C) Razboinichya Cave
D) Grotta Romanelli
  • 72. What percentage of the dog sequences were included in Clade B?
A) 12%
B) 50%
C) 22%
D) 64%
  • 73. During which cold events might domestication have happened after the arrival of humans in West Europe?
A) Little Ice Age events
B) Heinrich events
C) Bond events
D) Dansgaard-Oeschger events
  • 74. When did modern European breeds emerge according to historical context?
A) 12th century
B) 15th century
C) 19th century
D) Ancient Roman times
  • 75. Where was the Cava Filo archaeological site located where wolf samples fell within the domestic dog clade A haplogroup?
A) In the Altai Mountains, southern Siberia
B) In Apulia, southern Italy
C) Near Mechernich, Germany
D) Near San Lazzaro di Savena, Bologna, northern Italy
  • 76. In what year were dog remains found in Paglicci Cave and Grotta Romanelli in Apulia, southern Italy?
A) 2018
B) 2015
C) 2020
D) 2013
  • 77. What might early selection have favored if early dogs scavenged on human carcasses?
A) A completely flat face
B) A wolf-like morphology
C) Floppy ears
D) A miniature body size
  • 78. Which bone of the Erralla dog showed a reduction in size compared to wolf humeri?
A) Jaw
B) Humerus
C) Femur
D) Skull
  • 79. What did a 2025 morphometric study analyze?
A) 50 canid genomes
B) 100 canid skeletons
C) 643 canid skulls
D) 1,000 canid teeth
  • 80. Which gene is affected by the gene variant that spread to all wolves and dogs today?
A) WOLF1
B) IFT88
C) SKULL50
D) DNA100
  • 81. Who is the senior author of the study that tracked natural selection in wolves?
A) Gregor Mendel
B) Charles Darwin
C) Richard Leakey
D) Pontus Skoglund
  • 82. What type of process is animal domestication described as?
A) Artificial selection only
B) Linear biological evolution
C) Coevolutionary process
D) A rapid mutation event
  • 83. How many population bottlenecks have occurred to the dog lineage according to the text?
A) Three
B) Four
C) Two
D) One
  • 84. Which term was developed by anthropologists with a human-centric view?
A) Socialization
B) Bottleneck
C) Domestication
D) Coevolution
  • 85. What wild animals does the text mention anthropologists typically focused on when defining traditional domestication?
A) Primates
B) Rodents
C) Ungulates
D) Carnivores
  • 86. What was the name of the gentle black wolf that formed relationships with people and dogs in Juneau, Alaska?
A) Lobo
B) Romeo
C) White Fang
D) Balto
  • 87. According to the alternate view, what had to happen before there could be domestication of the wolf?
A) Socialization
B) Agricultural development
C) Phenotype divergence
D) A population bottleneck
  • 88. What pathway did the dog likely take into domestication?
A) Commensal pathway
B) Agricultural pathway
C) Directed pathway
D) Prey pathway
  • 89. Why might it have been inevitable that the first domesticated animal came from the order of carnivores?
A) Carnivores have the most docile temperaments
B) Carnivores are less afraid when approaching other species
C) Carnivores are easier to breed in captivity
D) Carnivores rely entirely on plant-based diets
  • 90. Which family within the carnivores did the first domesticated animal belong to?
A) Canidae
B) Felidae
C) Ursidae
D) Mustelidae
  • 91. Which wolves were most likely drawn to human camps?
A) Sick and injured older wolves
B) Extremely aggressive lone wolves
C) Alpha wolves seeking total control
D) Less-aggressive, subdominant pack members
  • 92. What process started when less-aggressive wolves were drawn to human camps?
A) Genetic engineering
B) Forced adaptation
C) Self-domestication
D) Artificial selection
  • 93. Which animals did some wolves follow on the mammoth steppe?
A) Great reindeer herds
B) Saber-toothed cats
C) Woolly mammoths
D) Wild horses
  • 94. What order of mammals do humans belong to, making them unusual members of the large carnivore guild?
A) Primates
B) Rodentia
C) Carnivora
D) Ungulates
  • 95. What maximum percentage of their energy requirements can humans derive from protein?
A) 80%
B) 10%
C) 50%
D) 20%
  • 96. What can high protein consumption lead to in humans?
A) Illness
B) Superhuman strength
C) Better night vision
D) Infertility
  • 97. What food was not available during the harsh winters of the Last Glacial Maximum?
A) Game meat
B) Fat
C) Plant foods
D) Fish
  • 98. What do limb bones contain that was processed during the Last Glacial Maximum?
A) Marrow with high carbohydrate content
B) Dry calcium
C) Poisonous toxins
D) Fatty oils
  • 99. How long can typical carnivores like wolves survive on a protein-based diet?
A) Months
B) A couple of hours
C) Only a few days
D) Years without any limit
  • 100. What is the most common coat pattern found in modern wolves?
A) Agouti
B) Pure white
C) Solid black
D) Spotted calico
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